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    <title>BritTherm Pumps  from MacDonald Plumbing &amp; Heating Supplies</title>
    <link>http://www.macdonaldplumbingsupplies.com/rss/1/productlistings_rss/c2136:m38::flexi:pipe</link>
    <description></description>
    <copyright>Copyright 2026 MacDonald Plumbing &amp; Heating Supplies</copyright>
    <language>en</language>
    <lastBuildDate>Sun, 11 Oct 2026 02:05:29 +0100</lastBuildDate>
    <pubDate>Sun, 11 Oct 2026 02:05:29 +0100</pubDate>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S3 Series S3 25/4-130 (661999302)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-4-130-661999302-p23718"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s3-series-s3-25-4-130-661999302-p23718-68057_thumb.jpg" alt="BritTherm Сirculator Pump S3 Series S3 25/4-130 (661999302)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-4-130-661999302-p23718">BritTherm Сirculator Pump S3 Series S3 25/4-130 (661999302)</a></p>
<p>The BritTherm S3 25/4-130 Circulator Pump is a smart, automatic pump designed for efficient circulation and recirculation of clean potable water. Featuring a robust stainless steel EN1.4521 casing, it offers nine intelligent operating modes to suit various water system demands. Its flexible control options include manual fixed speeds, AUTO mode, constant and proportional pressure modes, plus an energy-saving night mode, ensuring optimal performance and reliability.
The BritTherm Circulator Pump S3 Series S3 25/4-130 is a modern and intelligent pump engineered for circulation and recirculation of clean potable water. Constructed with a stainless steel EN1.4521 casing, it combines durability with high performance.
This pump provides nine versatile operating modes, allowing it to adapt to a wide range of water supply system requirements. Users can select from three fixed speeds for traditional operation, or activate AUTO mode to let the pump automatically adjust to the system&#039;s optimal performance range.
Additionally, two constant pressure modes (CP1 and CP2) maintain stable pressure regardless of flow rate, while two proportional pressure modes (PP1 and PP2) adjust pump output in response to flow changes, ensuring efficiency and system protection.
The Night Operating Mode lowers energy consumption to just 5 watts during low-demand periods, balancing energy efficiency with consistent system quality.
Safety is paramount, with electrical and thermal protection mechanisms preventing damage from external faults unrelated to normal pump operation. The BritTherm S3 25/4-130 is ideal for intelligent water circulation systems requiring adaptable, efficient, and reliable pumping solutions.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Durable stainless steel EN1.4521 casing ✅ Nine intelligent operating modes for versatile control ✅ Three fixed speeds for manual operation ✅ AUTO mode for automatic optimisation of pump performance ✅ Constant pressure modes (CP1 and CP2) for stable pressure maintenance ✅ Proportional pressure modes (PP1 and PP2) for flow-responsive adjustments ✅ Energy-saving Night mode reduces power to 5 watts ✅ One-button operation for user convenience ✅ Electrical and thermal protection for enhanced pump safety ✅ Suitable for potable water circulation and recirculation systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-4-130-661999302-p23718</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-4-130-661999302-p23718</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S3 Series S3 25/5-130 (661999305)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-5-130-661999305-p23720"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s3-series-s3-25-5-130-661999305-p23720-68061_thumb.jpg" alt="BritTherm Сirculator Pump S3 Series S3 25/5-130 (661999305)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-5-130-661999305-p23720">BritTherm Сirculator Pump S3 Series S3 25/5-130 (661999305)</a></p>
<p>The BritTherm S3 25/5-130 Circulator Pump offers advanced, automatic operation for efficient circulation and recirculation of clean potable water. Built with a stainless steel EN1.4521 casing, this pump features nine intelligent operating modes, including three fixed speeds, AUTO mode, constant and proportional pressure settings, and a low-energy night mode. It adapts seamlessly to varying water system demands, ensuring reliable, energy-efficient performance.
The BritTherm Circulator Pump S3 Series S3 25/5-130 is engineered to provide smart, automatic water circulation and recirculation in potable water systems. Its robust stainless steel EN1.4521 casing ensures long-lasting durability and corrosion resistance.
This model includes nine intelligent operating modes designed to suit diverse plumbing and water supply requirements. Users can choose from three fixed speeds for manual control or activate AUTO mode, which intelligently selects the optimal pump performance based on system needs.
Two constant pressure modes (CP1 and CP2) maintain stable pressure regardless of flow fluctuations, while two proportional pressure modes (PP1 and PP2) adapt pump operation proportionally to changes in flow rate, maximising efficiency.
The Night Operating Mode significantly lowers energy use to just 5 watts during periods of reduced demand, preserving system integrity without wasting power.
Electrical and thermal protection systems help safeguard the pump against damage caused by external faults unrelated to normal operation, enhancing reliability and lifespan. The BritTherm S3 25/5-130 is ideal for modern potable water circulation systems seeking smart, adaptable, and energy-efficient pumping solutions.
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Features &amp;amp; Benefits: ✅ Stainless steel EN1.4521 casing for durability and corrosion resistance ✅ Nine intelligent operating modes for flexible control ✅ Three fixed speeds for manual operation ✅ AUTO mode for automatic system optimisation ✅ Constant pressure modes (CP1 and CP2) for pressure stability ✅ Proportional pressure modes (PP1 and PP2) for flow-responsive performance ✅ Energy-saving Night mode with just 5-watt power consumption ✅ One-button activation for ease of use ✅ Electrical and thermal protection for pump safety ✅ Suitable for potable water circulation and recirculation</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-5-130-661999305-p23720</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-5-130-661999305-p23720</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S3 Series S3 25/6-130 (661999308)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-6-130-661999308-p23722"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s3-series-s3-25-6-130-661999308-p23722-68065_thumb.jpg" alt="BritTherm Сirculator Pump S3 Series S3 25/6-130 (661999308)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-6-130-661999308-p23722">BritTherm Сirculator Pump S3 Series S3 25/6-130 (661999308)</a></p>
<p>The BritTherm S3 25/6-130 Circulator Pump delivers powerful, intelligent performance for the circulation and recirculation of clean potable water. With a durable stainless steel EN1.4521 body and nine advanced operating modes, this pump adapts seamlessly to varying system requirements. It combines high efficiency, quiet operation, and enhanced safety, making it ideal for residential and commercial systems alike.
Designed for modern water systems, the BritTherm Circulator Pump S3 Series S3 25/6-130 is built with precision and intelligence at its core. The stainless steel EN1.4521 casing offers outstanding corrosion resistance, making it suitable for potable water systems that demand reliability and hygiene.
With nine operating modes, this pump provides complete flexibility. Users can select from three fixed speed settings for traditional control or utilise the AUTO mode, where the pump dynamically adjusts to suit system demands. Constant pressure modes (CP1 and CP2) maintain a steady flow irrespective of system fluctuations, while proportional pressure modes (PP1 and PP2) fine-tune performance relative to flow rate changes.
The Night Mode reduces energy usage to just 5 watts during off-peak hours, preserving efficiency while reducing operating costs. Built-in electrical and thermal protection safeguards the pump from faults unrelated to its internal systems, ensuring long-term durability.
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Features &amp;amp; Benefits: ✅ Robust stainless steel EN1.4521 construction ✅ Nine intelligent operating modes ✅ Manual control via three fixed speeds ✅ Smart AUTO mode for system-matched efficiency ✅ Constant pressure modes (CP1 and CP2) for steady flow ✅ Proportional pressure modes (PP1 and PP2) for demand-based adjustment ✅ Night Mode cuts power use to 5W during low-demand periods ✅ Simple one-touch operation ✅ Integrated thermal and electrical protection ✅ Suitable for clean potable water circulation systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-6-130-661999308-p23722</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s3-series-s3-25-6-130-661999308-p23722</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731-68083_thumb.jpg" alt="BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731">BritTherm Сirculator Pump S4 Series S4 25/4-180 (661999403)</a></p>
<p>The BritTherm S4 25/4-180 Circulator Pump offers intelligent circulation for potable water systems, designed with a longer 180mm body and 1&quot; BSP connections. With 9 smart operating modes including AUTO, constant pressure, and proportional pressure settings, this pump ensures efficient, reliable performance tailored to system demand. It&amp;rsquo;s housed in durable stainless steel and features electrical and thermal protection for long-term safety.
The BritTherm Circulator Pump S4 25/4-180 is built for installers and engineers looking for efficiency, flexibility, and dependability in potable water circulation. Its extended 180mm length makes it ideal for replacing pumps in systems with longer fixing centres. With nine intelligent operating modes, including energy-saving AUTO and Night Mode, the pump dynamically adjusts to varying flow demands without manual recalibration.
It features three &amp;ldquo;Old School&amp;rdquo; fixed-speed settings, two constant pressure (CP1, CP2), and two proportional pressure (PP1, PP2) modes for advanced control. Constructed with an EN1.4521 stainless steel casing, it&amp;rsquo;s safe for potable water use and protected against overheating and electrical faults. Whether you&#039;re fitting new or retrofitting existing pipework, this pump is a top-tier solution.
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Features &amp;amp; Benefits: ✅ 180mm pump length with 1&quot; BSP connections ✅ Hygienic EN1.4521 stainless steel construction ✅ 9 smart operation modes including AUTO and Night Mode ✅ Classic 3-speed manual control option ✅ Constant pressure settings: CP1 &amp;amp; CP2 ✅ Proportional pressure settings: PP1 &amp;amp; PP2 ✅ Night Mode lowers energy use to 5W ✅ Built-in electrical and thermal protection ✅ Ideal for potable water circulation systems ✅ Excellent for both domestic and light commercial use</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-4-180-661999403-p23731</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S4 Series S4 25/5-180 (661999406)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-5-180-661999406-p23733"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s4-series-s4-25-5-180-661999406-p23733-68087_thumb.jpg" alt="BritTherm Сirculator Pump S4 Series S4 25/5-180 (661999406)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-5-180-661999406-p23733">BritTherm Сirculator Pump S4 Series S4 25/5-180 (661999406)</a></p>
<p>The BritTherm S4 25/5-180 Circulator Pump delivers smart, efficient performance for potable water circulation systems. With a 180mm body length and 1½&quot; BSP connections, it is ideal for larger installations or replacements requiring extended centre spacing. The pump features nine intelligent operating modes including AUTO, constant pressure, and proportional pressure, designed to adapt to system needs while saving energy. A durable stainless steel casing makes it safe for drinking water applications.
Designed for efficient circulation and recirculation of clean potable water, the BritTherm Circulator Pump S4 25/5-180 brings together intelligent technology and robust construction. The unit is equipped with 9 versatile modes to suit all system demands, from constant and proportional pressure settings to energy-saving AUTO and Night Modes.
Its EN1.4521 stainless steel casing ensures hygienic water contact, while built-in thermal and electrical protection safeguards the pump against operational faults. The 180mm length suits wider pipework layouts, making it perfect for installations with specific spacing requirements. Quiet, adaptable and low-maintenance, this pump is an essential component for modern water systems.
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Features &amp;amp; Benefits: ✅ 180mm body length with 1½&quot; BSP connections ✅ EN1.4521 stainless steel suitable for drinking water ✅ 9 operation modes, including AUTO and Night Mode ✅ Three manual fixed-speed settings for flexibility ✅ Constant pressure control: CP1 &amp;amp; CP2 ✅ Proportional pressure adjustment: PP1 &amp;amp; PP2 ✅ Energy-saving Night Mode drops usage to 5W ✅ Thermal and electrical safety protection ✅ Quiet, smart, and durable pump design ✅ Ideal for larger or retrofit installations</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-5-180-661999406-p23733</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s4-series-s4-25-5-180-661999406-p23733</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S5 Series S5 25/8-180 (661999501)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-25-8-180-661999501-p23739"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s5-series-s5-25-8-180-661999501-p23739-68101_thumb.jpg" alt="BritTherm Сirculator Pump S5 Series S5 25/8-180 (661999501)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-25-8-180-661999501-p23739">BritTherm Сirculator Pump S5 Series S5 25/8-180 (661999501)</a></p>
<p>The BritTherm S5 25/8-180 Circulator Pump is a powerful, high-tech solution tailored for commercial potable water circulation systems. Constructed with a stainless steel EN1.4521 casing, it offers 13 intelligent operating modes, including four constant speed settings, four constant pressure modes, four proportional pressure options, and an adaptive AUTO mode. This 180mm pump is ideal for high-demand water supply applications where reliability, control, and performance are critical.
Built for commercial reliability, the BritTherm Circulator Pump S5 Series S5 25/8-180 is a heavy-duty, intelligent pump designed for potable water circulation in complex water supply systems. Housed in a durable EN1.4521 stainless steel body, this 180mm pump features a full suite of 13 operating modes, allowing precise adaptation to system requirements.
Operators can manually choose from four fixed rotor speeds for steady flow or enable one of four constant pressure (CP2–CP5) or four proportional pressure (PP2–PP5) modes that dynamically respond to demand. The AUTO mode optimises performance automatically, reducing energy use without sacrificing pressure. Electrical and thermal protection systems ensure long-term safety and resilience, making the S5 Series a trusted choice for commercial installations.
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Features &amp;amp; Benefits: ✅ Robust EN1.4521 stainless steel construction ✅ Designed for commercial potable water systems ✅ 180mm pump length for broader installation compatibility ✅ 13 intelligent operating modes for system flexibility ✅ AUTO mode for smart, energy-efficient performance ✅ Four fixed rotor speeds for constant flow control ✅ Four CP modes for stable pressure regardless of demand ✅ Four PP modes for dynamic, demand-based operation ✅ Electrical protection prevents overload and faults ✅ Thermal protection safeguards against overheating</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-25-8-180-661999501-p23739</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-25-8-180-661999501-p23739</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S5 Series S5 32/10-180 (661999504)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-10-180-661999504-p23740"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s5-series-s5-32-10-180-661999504-p23740-68107_thumb.jpg" alt="BritTherm Сirculator Pump S5 Series S5 32/10-180 (661999504)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-10-180-661999504-p23740">BritTherm Сirculator Pump S5 Series S5 32/10-180 (661999504)</a></p>
<p>The BritTherm S5 32/10-180 Circulator Pump is built to perform in high-demand commercial potable water systems. With a corrosion-resistant EN1.4521 stainless steel body and an extended 180mm length, it delivers superior durability and power. This advanced pump offers 13 operating modes, including AUTO, constant speed, constant pressure, and proportional pressure settings—giving full control over system efficiency and performance. Safety is paramount, with thermal and electrical protection built in to prevent system faults.
Engineered for intensive commercial use, the BritTherm Circulator Pump S5 Series S5 32/10-180 delivers powerful circulation for potable water systems. The pump&amp;rsquo;s high-quality EN1.4521 stainless steel casing ensures hygienic operation and long-lasting durability.
With 13 intelligent operating modes, including four fixed-speed options for traditional performance, four constant pressure settings to maintain system stability, and four proportional pressure modes that automatically respond to changing flow demands, this pump adapts precisely to the needs of modern installations. The AUTO mode offers smart, energy-saving adjustments based on system conditions. Built-in thermal and electrical safeguards add an extra layer of reliability, making this pump ideal for continuous commercial operation.
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Features &amp;amp; Benefits: ✅ EN1.4521 stainless steel casing for hygienic potable water use ✅ 180mm body for commercial installations ✅ 13 flexible operating modes for system precision ✅ AUTO mode for energy-efficient optimisation ✅ Four fixed-speed modes for consistent flow ✅ Four constant pressure settings (CP2–CP5) ✅ Four proportional pressure settings (PP2–PP5) ✅ Electrical protection prevents damage from surges ✅ Thermal protection guards against overheating ✅ Suitable for demanding water supply systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-10-180-661999504-p23740</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-10-180-661999504-p23740</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S5 Series S5 32/8-180 (661999502)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-8-180-661999502-p23741"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s5-series-s5-32-8-180-661999502-p23741-68103_thumb.jpg" alt="BritTherm Сirculator Pump S5 Series S5 32/8-180 (661999502)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-8-180-661999502-p23741">BritTherm Сirculator Pump S5 Series S5 32/8-180 (661999502)</a></p>
<p>The BritTherm S5 32/8-180 Circulator Pump is a robust and intelligent solution engineered for commercial potable water supply systems. With a durable EN1.4521 stainless steel casing and 13 versatile operating modes, this 180mm pump provides exceptional performance and control. It features four constant speed modes, four constant pressure settings, four proportional pressure modes, and an energy-saving AUTO mode, making it ideal for demanding environments requiring consistent flow and smart efficiency.
Designed for high-demand commercial applications, the BritTherm Circulator Pump S5 Series S5 32/8-180 delivers unmatched performance and adaptability in potable water systems. Housed in a corrosion-resistant EN1.4521 stainless steel body, this advanced 180mm circulator offers 13 operating modes tailored for optimal control and energy efficiency.
Whether you&#039;re maintaining consistent flow with fixed speed settings or adapting dynamically to changes with constant or proportional pressure modes, this pump ensures reliable output. The AUTO mode intelligently selects the best settings for current system conditions, minimising power consumption without reducing effectiveness. Integrated electrical and thermal protection enhances durability, safeguarding the system from operational faults and external risks.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ EN1.4521 stainless steel construction for potable water use ✅ 180mm length suitable for commercial installations ✅ 13 intelligent operating modes for maximum flexibility ✅ AUTO mode for smart energy-saving performance ✅ Four fixed rotor speed modes for constant operation ✅ Four CP modes ensure stable system pressure ✅ Four PP modes adjust to variable system demands ✅ Built-in electrical protection against overloads ✅ Thermal protection to prevent overheating ✅ Ideal for complex potable water circulation systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-8-180-661999502-p23741</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s5-series-s5-32-8-180-661999502-p23741</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S6 Series S6 25/10-180 (661999601)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s6-series-s6-25-10-180-661999601-p23742"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s6-series-s6-25-10-180-661999601-p23742-68097_thumb.jpg" alt="BritTherm Сirculator Pump S6 Series S6 25/10-180 (661999601)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s6-series-s6-25-10-180-661999601-p23742">BritTherm Сirculator Pump S6 Series S6 25/10-180 (661999601)</a></p>
<p>The BritTherm S6 25/10-180 Circulator Pump is a cutting-edge solution designed for high-performance potable water circulation systems. Featuring a robust stainless steel EN1.4521 casing and enhanced functionality, it includes 10 intelligent operating modes plus PWM GT and PWM ST functions for seamless integration with smart thermostats and controllers. With AUTO mode, fixed speeds, and both constant and proportional pressure settings, this 180mm pump offers unmatched flexibility, efficiency, and remote control capabilities for large-scale water and heating systems.
The BritTherm Circulator Pump S6 Series S6 25/10-180 sets a new standard for smart water circulation. Crafted with a corrosion-resistant stainless steel EN1.4521 casing, this pump is tailored for use in potable water systems, making it ideal for domestic and commercial installations. It offers 10 automatic operating modes, including three fixed speeds, AUTO mode for adaptive energy-efficient operation, constant pressure modes (CP1 and CP2), and proportional pressure modes (PP1 and PP2) to meet variable system demands.
Uniquely, the S6 Series introduces PWM GT and PWM ST control functions, enabling remote pump regulation via low-voltage signal. This allows direct integration with smart thermostats and building automation systems such as Siemens and Honeywell. Electrical and thermal protection ensures the pump remains safe from faults not caused by pump operation. This intelligent 180mm model is built for performance, connectivity, and reliability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Stainless steel EN1.4521 casing for potable water use ✅ Extended 180mm body for versatile installations ✅ 10 automatic operating modes for optimal flexibility ✅ Three fixed speeds for precise manual control ✅ AUTO mode optimises energy usage and performance ✅ CP1 &amp;amp; CP2 modes maintain consistent system pressure ✅ PP1 &amp;amp; PP2 modes adapt output based on demand ✅ Built-in PWM GT and ST for remote thermostat control ✅ Compatible with Siemens, Honeywell and more ✅ Electrical and thermal protection for pump safety</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s6-series-s6-25-10-180-661999601-p23742</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s6-series-s6-25-10-180-661999601-p23742</link>
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              <pubDate>Sun, 11 Oct 2026 02:05:29 +0100</pubDate>
              <title>BritTherm Сirculator Pump B1 Series B1 25/8-180 (661996707)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-8-180-661996707-p23675"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b1-series-b1-25-8-180-661996707-p23675-67952_thumb.jpg" alt="BritTherm Сirculator Pump B1 Series B1 25/8-180 (661996707)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-8-180-661996707-p23675">BritTherm Сirculator Pump B1 Series B1 25/8-180 (661996707)</a></p>
<p>The BritTherm B1 25/8-180 Circulator Pump is a durable bronze pump designed for circulating hot and cold drinking water in domestic heating and plumbing systems. With a higher head and longer 180mm body, it&amp;rsquo;s ideal for systems requiring more power or pressure. The manual three-speed setting offers full control, while integrated thermal and electrical protection ensures safe, reliable operation across a range of applications.
The BritTherm Circulator Pump B1 Series B1 25/8-180 offers increased power and flexibility, making it the ideal solution for high-performance domestic heating and water systems. The bronze body construction ensures suitability for potable water, while the 180mm length is compatible with a wide variety of system layouts, especially those needing a higher head pump.
This pump includes three manually selectable speed settings via a traditional mechanical switch – a proven and dependable feature for installers and engineers. Safety is prioritised with built-in electrical and thermal protection to prevent damage from overheating or electrical faults.
A dependable, cost-effective upgrade or replacement pump for traditional and modern plumbing systems.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Three-speed manual switch for adjustable flow control ✅ Bronze construction for hot and cold potable water systems ✅ Extended 180mm body for greater installation flexibility ✅ Higher head for more demanding system requirements ✅ Thermal and electrical safety protection included ✅ Long-lasting and maintenance-friendly design</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-8-180-661996707-p23675</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-8-180-661996707-p23675</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump B3 Series B3 32/10-180 (661996914)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-32-10-180-661996914-p23690"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b3-series-b3-32-10-180-661996914-p23690-67982_thumb.jpg" alt="BritTherm Сirculator Pump B3 Series B3 32/10-180 (661996914)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-32-10-180-661996914-p23690">BritTherm Сirculator Pump B3 Series B3 32/10-180 (661996914)</a></p>
<p>The BritTherm B3 32/10-180 Circulator Pump is a modern, automatic pump designed to optimise potable water circulation and recirculation with nine intelligent operating modes. Its large 180mm size suits demanding systems, while energy-saving features like the night mode ensure efficient operation and reduced power consumption.
The BritTherm Circulator Pump B3 32/10-180 combines cutting-edge technology with user-friendly functionality to provide reliable water circulation for potable systems. Featuring nine intelligent modes, this pump adapts to varying system requirements for optimal performance.
Users can select three fixed speeds for straightforward manual operation or engage AUTO mode for automated adjustment of the pump&amp;rsquo;s operating range. The two constant pressure modes (CP1 and CP2) maintain steady pressure in circulation and recirculation systems, irrespective of flow rate changes. Meanwhile, two proportional pressure modes (PP1 and PP2) respond dynamically to flow rate fluctuations, ensuring energy-efficient operation tailored to system demands.
A special night mode limits energy use to just 5 watts during low-demand periods, preserving system quality without excessive running. The pump also features electrical and thermal protection systems to guard against damage caused by external factors unrelated to pump operation, enhancing safety and longevity.
Ideal for larger potable water systems requiring precise control and energy efficiency, this 180mm pump delivers dependable, quiet, and intelligent circulation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Large 180mm pump suitable for demanding installations ✅ Nine intelligent operating modes for flexible control ✅ Energy-saving night mode reduces consumption to 5 watts ✅ Three fixed speeds for manual selection ✅ Constant pressure modes maintain system stability ✅ Proportional pressure modes adapt to flow changes ✅ Simple one-button AUTO mode for automatic adjustment ✅ Electrical and thermal protection for enhanced durability ✅ Designed for potable water circulation and recirculation ✅ Quiet and reliable for commercial and domestic use</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-32-10-180-661996914-p23690</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b3-series-b3-32-10-180-661996914-p23690</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump B4 Series B4 25/4-180 (661999003)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-4-180-661999003-p23698"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b4-series-b4-25-4-180-661999003-p23698-67998_thumb.jpg" alt="BritTherm Сirculator Pump B4 Series B4 25/4-180 (661999003)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-4-180-661999003-p23698">BritTherm Сirculator Pump B4 Series B4 25/4-180 (661999003)</a></p>
<p>The BritTherm B4 25/4-180 Circulator Pump offers powerful and intelligent circulation of cold and hot potable water in a longer 180mm format. Designed for modern water systems, this advanced pump includes 9 automatic modes, including AUTO, constant pressure, and proportional pressure settings. With built-in energy-saving night mode and robust thermal and electrical protection, it delivers efficient performance, reliability, and flexibility for both domestic and light commercial applications.
The BritTherm Circulator Pump B4 25/4-180 is engineered for superior water circulation in larger installations, with its 180mm body offering a longer reach for retrofit and extended pipework setups. Ideal for potable hot and cold water systems, it provides 9 operating modes to suit various system demands, including AUTO mode for adaptive control, two constant pressure settings (CP1 and CP2), and two proportional pressure settings (PP1 and PP2).
The traditional three-speed manual mode ensures versatility, while night mode cuts energy use to just 5 watts during off-peak hours. Built-in protection against thermal and electrical faults helps prolong pump life and prevent failures due to external power conditions. This 25mm circulator pump delivers high efficiency, smart performance, and user-friendly operation in any system requiring a longer pump length.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Extended 180mm body for longer pipe centres ✅ AUTO mode for automatic system optimisation ✅ Three manual speed settings for user control ✅ Constant pressure modes for steady operation ✅ Proportional pressure modes for system efficiency ✅ Night mode with ultra-low 5W consumption ✅ 25mm connections for larger bore pipework ✅ Suitable for both hot and cold potable water ✅ Integrated electrical and thermal protection ✅ Ideal for modern domestic and light commercial installs</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-4-180-661999003-p23698</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-4-180-661999003-p23698</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump B4 Series B4 25/5-180 (661999006)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-5-180-661999006-p23700"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b4-series-b4-25-5-180-661999006-p23700-68002_thumb.jpg" alt="BritTherm Сirculator Pump B4 Series B4 25/5-180 (661999006)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-5-180-661999006-p23700">BritTherm Сirculator Pump B4 Series B4 25/5-180 (661999006)</a></p>
<p>The BritTherm B4 25/5-180 Circulator Pump is a high-efficiency solution for potable water circulation in larger systems. Designed with a 180mm body length and 25mm connections, it combines traditional fixed-speed control with nine intelligent operating modes, including AUTO, constant pressure, and proportional pressure options. With built-in energy-saving features and protective mechanisms, this pump delivers reliable performance, especially where longer pump bodies are required for direct replacements.
The BritTherm Circulator Pump B4 25/5-180 is engineered for flexibility and long-lasting efficiency in heating and potable water systems. With its extended 180mm body, it is particularly suitable for direct replacement in installations requiring this size. Its 25mm ports support medium-head circulation applications, while the smart control system automatically adjusts performance for changing flow demands.
The pump offers three manual speed options, AUTO mode for self-adjusting operation, two constant pressure settings (CP1 and CP2), and two proportional pressure modes (PP1 and PP2). For additional efficiency, the Night Operating Mode reduces power use to just 5 watts when demand is low. Electrical and thermal protection safeguards the unit from voltage fluctuations and overheating, making it a dependable choice for modern plumbing systems.
Features &amp;amp; Benefits: ✅ Extended 180mm body ideal for replacement installations ✅ 25mm connections suitable for potable water circulation ✅ AUTO mode for intelligent, hands-free performance ✅ Three selectable fixed speeds ✅ Two constant pressure modes (CP1, CP2) ✅ Two proportional pressure modes (PP1, PP2) ✅ Night mode lowers energy usage to 5W ✅ Smooth and quiet operation ✅ Overheat and electrical protection included ✅ Simple, intuitive push-button controls</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-5-180-661999006-p23700</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b4-series-b4-25-5-180-661999006-p23700</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S2 Series S2 12/10-162 (661999202)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-10-162-661999202-p23711"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s2-series-s2-12-10-162-661999202-p23711-68043_thumb.jpg" alt="BritTherm Сirculator Pump S2 Series S2 12/10-162 (661999202)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-10-162-661999202-p23711">BritTherm Сirculator Pump S2 Series S2 12/10-162 (661999202)</a></p>
<p>The BritTherm S2 12/10-162 Circulator Pump is a reliable booster pump designed specifically for use with water tanks to ensure a stable and consistent water supply. Built with a durable stainless steel EN1.4521 casing, it features dual automatic operation modes to suit domestic plumbing needs. The pump is fitted with a ¾&quot; threaded connection for easy installation and includes an integrated check valve for efficient backflow prevention.
The BritTherm Circulator Pump S2 Series S2 12/10-162 offers an intelligent solution for boosting water supply from tanks, maintaining consistent pressure and flow for household consumption. Constructed from high-quality stainless steel EN1.4521, this pump is engineered to withstand the rigours of everyday use and resist corrosion.
It provides two operational programmes: Manual Mode, where the pump runs continuously until manually switched off, and AUTO Mode, which intelligently detects water flow and pressure changes, activating the pump automatically when taps open and shutting off when they close. This automatic feature ensures energy efficiency and convenience.
The pump includes an integrated check valve within the casing, preventing backflow and maintaining system integrity. Electrical and thermal protection systems safeguard the pump from breakdowns caused by external faults unrelated to normal operation, ensuring reliable performance and longevity.
Ideal for use with drinking water tanks, the BritTherm S2 12/10-162 enhances domestic water systems by stabilising pressure and flow for a smooth water supply.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Durable stainless steel EN1.4521 casing for long-lasting performance ✅ Dual operation modes: Manual and AUTO for flexible control ✅ Automatic start/stop based on flow and pressure changes in AUTO mode ✅ Integrated check valve prevents backflow ✅ ¾&quot; threaded connection for simple installation ✅ Electrical and thermal protection systems for pump safety ✅ Ideal for boosting water supply from tanks in domestic plumbing</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-10-162-661999202-p23711</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-10-162-661999202-p23711</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump S2 Series S2 12/9-160 (661999201)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-9-160-661999201-p23712"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-s2-series-s2-12-9-160-661999201-p23712-68045_thumb.jpg" alt="BritTherm Сirculator Pump S2 Series S2 12/9-160 (661999201)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-9-160-661999201-p23712">BritTherm Сirculator Pump S2 Series S2 12/9-160 (661999201)</a></p>
<p>The BritTherm S2 12/9-160 Circulator Pump is designed to work efficiently with water tanks, drawing water directly to maintain a stable and reliable supply. Made with a robust stainless steel EN1.4521 casing, this pump offers two operational modes—Manual and AUTO—tailored for domestic plumbing systems. It features a convenient ¾&quot; threaded connection and an integrated check valve to prevent backflow.
The BritTherm Circulator Pump S2 Series S2 12/9-160 provides a dependable solution for boosting water supply from tanks in residential settings. Constructed from corrosion-resistant stainless steel EN1.4521, the pump is built to deliver durability and consistent performance.
This model operates in two modes: Manual Mode, where the pump runs continuously at a fixed shaft rotation speed until switched off, and AUTO Mode, which automatically activates when water flow is detected (e.g., when a tap is opened) and stops when the flow ceases. This feature optimises energy use and system efficiency.
Equipped with an integrated check valve within the pump casing, it effectively prevents water backflow, protecting the system. The pump&amp;rsquo;s automation is easily controlled by a single button, providing simple start/stop operation based on water flow and pressure changes. Electrical and thermal protection systems ensure safe operation and help avoid damage caused by external factors unrelated to normal pump function.
Ideal for use with drinking water tanks, the BritTherm S2 12/9-160 stabilises water pressure and flow, delivering smooth and reliable water supply throughout the home.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Stainless steel EN1.4521 casing for strength and corrosion resistance ✅ Dual operational modes: Manual and AUTO for flexible control ✅ AUTO mode responds to tap opening and closing for energy efficiency ✅ Integrated check valve to prevent backflow ✅ ¾&quot; threaded connection for easy installation ✅ One-button automation for start/stop control ✅ Electrical and thermal protection for enhanced pump safety ✅ Suitable for boosting water supply from domestic tanks</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-9-160-661999201-p23712</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-s2-series-s2-12-9-160-661999201-p23712</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump B1 Series B1 20/12-180 (661996708)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-20-12-180-661996708-p23670"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b1-series-b1-20-12-180-661996708-p23670-67942_thumb.jpg" alt="BritTherm Сirculator Pump B1 Series B1 20/12-180 (661996708)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-20-12-180-661996708-p23670">BritTherm Сirculator Pump B1 Series B1 20/12-180 (661996708)</a></p>
<p>The BritTherm B1 20/12-180 Circulator Pump is a high-performance, three-speed circulation pump built with a durable bronze body for safe use with cold and hot drinking water. Designed for demanding applications, this model delivers strong flow capacity and flexibility with manually selected speed settings. With reliable thermal and electrical protection, it&amp;rsquo;s a time-tested solution for domestic and light commercial systems.
Built to handle higher capacity circulation requirements, the BritTherm B1 20/12-180 Circulator Pump offers robust performance in potable water systems. Its bronze body construction provides excellent corrosion resistance, making it suitable for both hot and cold water circulation.
The pump features a manual switch with three fixed speeds, enabling users to easily adjust flow settings across the full power range to match the system&#039;s demands. This &amp;ldquo;Old School&amp;rdquo; design is favoured for its reliability and simplicity in a wide range of installation types.
To ensure safe and long-lasting operation, the pump is equipped with integrated electrical and thermal protection systems. These features safeguard against external faults and thermal overloads, preventing unexpected breakdowns and maintaining system reliability.
This model&amp;rsquo;s 180mm length and powerful performance make it ideal for larger domestic systems, commercial premises, or multi-zoned heating and water circulation applications.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Three-speed manual operation for adaptable flow control ✅ High-capacity performance for larger systems ✅ Bronze body for safe use with drinking water ✅ Reliable and easy-to-service design ✅ Electrical and thermal safety protection built in ✅ Ideal for both domestic and commercial water systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-20-12-180-661996708-p23670</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-20-12-180-661996708-p23670</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Сirculator Pump B1 Series B1 25/4-130 (661996702)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-4-130-661996702-p23671"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-сirculator-pump-b1-series-b1-25-4-130-661996702-p23671-67944_thumb.jpg" alt="BritTherm Сirculator Pump B1 Series B1 25/4-130 (661996702)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-4-130-661996702-p23671">BritTherm Сirculator Pump B1 Series B1 25/4-130 (661996702)</a></p>
<p>The BritTherm B1 25/4-130 Circulator Pump is a dependable three-speed pump designed for circulating both hot and cold potable water. Its classic bronze body construction ensures compatibility with drinking water systems, while the manual speed selector allows for precise control across varying system requirements. Ideal for homeowners and installers looking for a traditional, proven solution with added protection features for long-term reliability.
The BritTherm B1 25/4-130 Circulator Pump offers an efficient and robust solution for domestic water circulation. Featuring a durable bronze body, it&amp;rsquo;s suitable for applications involving drinking water, and resistant to corrosion over time.
This model comes with a simple three-speed mechanical switch, letting users set the flow rate to match their specific system performance needs. This &amp;ldquo;Old School&amp;rdquo; control method is appreciated for its reliability and ease of use, particularly in traditional or retrofit installations.
With built-in thermal and electrical protection, the pump is safeguarded from overheating and electrical faults, reducing the risk of breakdowns caused by external issues. Its compact 130mm length makes it suitable for tight installation spaces in residential systems.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Three manual speed settings for system flexibility ✅ Corrosion-resistant bronze body for potable water ✅ Trusted &amp;ldquo;Old School&amp;rdquo; mechanical control ✅ Thermal and electrical protection for peace of mind ✅ Compact design suitable for tight spaces ✅ Ideal for central heating and domestic water systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-4-130-661996702-p23671</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-сirculator-pump-b1-series-b1-25-4-130-661996702-p23671</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616-67853_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616">BritTherm Automatic Сirculator Pump P5 Series P5 25/8-130 (661995718)</a></p>
<p>The BritTherm P5 25/8-130 Circulator Pump is expertly engineered for HVAC systems, including boilers, heat pumps, and heat interface units (HIUs). Offering an 8-metre head and a compact 130mm body length, this pump includes two PWM control functions (GT and ST) for seamless integration with popular controllers such as Siemens and Honeywell. With 10 automatic operating modes, it delivers versatile, energy-efficient performance for a broad range of domestic heating applications.
The BritTherm P5 25/8-130 Circulator Pump provides reliable and flexible heating system circulation with an 8-metre head, ideal for moderately high-pressure needs in boilers, heat pumps, and HIUs. Its 130mm length design fits neatly into many installation environments while maintaining robust performance.
This pump incorporates two unique PWM functions (GT and ST), enabling remote operation via two low-voltage cables compatible with a wide variety of controllers and thermostats, including Siemens and Honeywell models.
With 10 automatic modes, including the simple AUTO mode for quick commissioning across 80% of heating systems, the pump adapts easily to different system demands. It features two constant pressure modes tailored for underfloor heating or stable flow systems and two proportional pressure modes for systems with variable flow rates. Additionally, three fixed speed modes offer manual control options for more traditional setups.
An energy-saving night mode reduces power consumption to just 5 watts without sacrificing heating performance. Electrical and thermal protection features guard the pump against damage caused by external faults, ensuring long-lasting, reliable operation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 8-metre head for higher-pressure heating system demands ✅ Compact 130mm length for versatile installation ✅ Standard 25mm pipe connections ✅ Easy AUTO mode for rapid system commissioning ✅ Two constant pressure modes for steady-flow systems ✅ Two proportional pressure modes for variable flow rate systems ✅ Three fixed-speed settings for manual control ✅ Night power reduction to 5 watts for energy efficiency ✅ Dual PWM control (GT and ST) compatible with Siemens, Honeywell, and more ✅ Electrical and thermal protection for enhanced durability</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p5-series-p5-25-8-130-661995718-p23616</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P7 Series P7 32/10-180 (661995904)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-10-180-661995904-p23633"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p7-series-p7-32-10-180-661995904-p23633-67887_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P7 Series P7 32/10-180 (661995904)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-10-180-661995904-p23633">BritTherm Automatic Сirculator Pump P7 Series P7 32/10-180 (661995904)</a></p>
<p>The BritTherm P7 32/10-180 is a robust circulator pump tailored for commercial heating systems. It features a permanent magnet motor and compact rotor design that ensures whisper-quiet, energy-efficient operation. With 13 automatic operation modes including AUTO, constant pressure, proportional pressure, and fixed speed settings, this pump adapts to a wide variety of heating requirements. Its self-ventilated casing and built-in electrical and thermal protections guarantee reliable and safe performance.
Designed for demanding commercial HVAC and underfloor heating applications, the BritTherm P7 32/10-180 offers advanced functionality combined with durable engineering. This pump has 32mm ports and a 180mm length, delivering up to 10 metres of head pressure, making it suitable for medium to large heating circuits.
The pump&amp;rsquo;s permanent magnet motor and compact rotor technology minimise power consumption while maintaining ultra-quiet operation, ideal for installations where noise must be kept to a minimum. It includes 13 selectable operation modes: AUTO mode for simple commissioning, four constant pressure modes (CP2 to CP5) ideal for stable flow systems, four proportional pressure modes (PP2 to PP5) for systems with varying flow rates, and four fixed rotor speed modes for traditional setups.
An automatic night power reduction function decreases power consumption to just 5 watts during low demand periods without affecting heating comfort. The self-ventilated pump body design prevents air ingress, enhancing reliability and efficiency. Electrical and thermal protection systems safeguard the pump from external faults, ensuring longevity and dependable operation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Permanent magnet motor for superior energy efficiency ✅ Quiet operation with compact rotor technology ✅ 13 flexible operation modes including AUTO ✅ Four constant pressure modes (CP2 to CP5) ✅ Four proportional pressure modes (PP2 to PP5) ✅ Four fixed rotor speed modes for traditional control ✅ Night power reduction to 5W for energy savings ✅ Self-ventilated casing to prevent air ingress ✅ Electrical and thermal protection for added safety ✅ Ideal for commercial heating and underfloor heating systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-10-180-661995904-p23633</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-10-180-661995904-p23633</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P7 Series P7 32/8-180 (661995902)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-8-180-661995902-p23634"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p7-series-p7-32-8-180-661995902-p23634-67889_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P7 Series P7 32/8-180 (661995902)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-8-180-661995902-p23634">BritTherm Automatic Сirculator Pump P7 Series P7 32/8-180 (661995902)</a></p>
<p>The BritTherm P7 32/8-180 circulator pump is engineered for commercial heating applications, combining a permanent magnet motor with compact rotor technology for silent and energy-saving performance. Offering 13 automatic operation modes, including AUTO, constant pressure, proportional pressure, and fixed speed modes, it adapts easily to various system demands. With advanced electrical and thermal protections and a self-ventilated casing, this pump ensures reliability and long service life in underfloor heating and HVAC systems.
Designed for commercial HVAC and underfloor heating systems, the BritTherm P7 32/8-180 is a high-performance circulator pump featuring 32mm ports and a 180mm length. It delivers up to 8 metres of head pressure, ideal for medium-demand installations requiring quiet and efficient operation.
Equipped with a permanent magnet motor and compact rotor, the pump provides whisper-quiet operation while reducing power consumption. Its 13 selectable modes include AUTO mode for straightforward setup, four constant pressure modes (CP2 to CP5) for stable flow applications, four proportional pressure modes (PP2 to PP5) that adjust to varying flow rates, and four fixed rotor speed modes for traditional control.
The automatic night power reduction feature drops energy use to just 5 watts during off-peak hours, maintaining heating quality while saving electricity. Its self-ventilated design prevents air ingress, improving operational reliability. Built-in electrical and thermal protection systems guard against external faults, minimising downtime and enhancing durability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Permanent magnet motor for superior energy efficiency ✅ Whisper-quiet operation with compact rotor technology ✅ 13 flexible operation modes for varied heating systems ✅ Four constant pressure modes (CP2 to CP5) ✅ Four proportional pressure modes (PP2 to PP5) ✅ Four fixed rotor speed modes for consistent operation ✅ Automatic night power reduction to 5 watts ✅ Self-ventilated casing to prevent air ingress ✅ Electrical and thermal protection for enhanced safety ✅ Ideal for commercial HVAC and underfloor heating</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-8-180-661995902-p23634</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p7-series-p7-32-8-180-661995902-p23634</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P8 Series P8 50/12 (661996002)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-50-12-661996002-p23636"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p8-series-p8-50-12-661996002-p23636-67894_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P8 Series P8 50/12 (661996002)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-50-12-661996002-p23636">BritTherm Automatic Сirculator Pump P8 Series P8 50/12 (661996002)</a></p>
<p>The BritTherm P8 50/12 is a heavy-duty flanged circulator pump built for commercial heating systems. Featuring permanent magnet and compact rotor technology, it ensures quiet, efficient operation with low power consumption. The pump offers 16 automatic operation modes, including AUTO, constant pressure, proportional pressure, and fixed rotor speed modes, providing flexible control to suit a wide range of commercial heating requirements. An automatic night power reduction function further enhances energy savings without compromising heating performance. Robust electrical and thermal protection systems safeguard the pump for reliable long-term use.
Designed for demanding commercial HVAC applications, the BritTherm P8 50/12 is a robust flanged pump with a 50mm connection size and a maximum head of 12 metres. Its permanent magnet motor combined with compact rotor technology delivers whisper-quiet operation alongside low energy consumption, making it an ideal choice for modern heating systems focused on efficiency and noise reduction.
This pump features 16 selectable automatic modes for tailored system performance. The AUTO mode offers easy one-button activation and suits around 80% of existing heating setups. Five constant pressure modes (CP1 to CP5) are perfect for systems with stable flow requirements, while five proportional pressure modes (PP1 to PP5) automatically adjust to fluctuating flow rates. Additionally, five fixed rotor speed modes (CS1 to CS5) allow for traditional manual speed control.
The built-in automatic night power reduction function cuts energy use to just 5 watts during low-demand periods, reducing running costs without impacting heating quality. Comprehensive electrical and thermal protections prevent damage from external factors unrelated to pump operation, improving durability and uptime in commercial environments.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Heavy-duty 50mm flanged pump for commercial use ✅ Permanent magnet motor for efficient, quiet running ✅ Compact rotor technology minimises noise and energy use ✅ 16 versatile automatic operation modes ✅ Easy AUTO mode activation with one button ✅ Five constant pressure modes (CP1–CP5) for stable flow systems ✅ Five proportional pressure modes (PP1–PP5) for variable flow systems ✅ Five fixed rotor speed modes (CS1–CS5) for manual control ✅ Automatic night power reduction to 5 watts for energy saving ✅ Electrical and thermal protection systems for reliability</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-50-12-661996002-p23636</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-50-12-661996002-p23636</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P8 Series P8 65/12 (661996003)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-65-12-661996003-p23637"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p8-series-p8-65-12-661996003-p23637-67897_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P8 Series P8 65/12 (661996003)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-65-12-661996003-p23637">BritTherm Automatic Сirculator Pump P8 Series P8 65/12 (661996003)</a></p>
<p>The BritTherm P8 65/12 is a heavy-duty flanged circulator pump designed for commercial heating systems. It features a permanent magnet motor and compact rotor technology for quiet, efficient operation with low power consumption. With 16 automatic operation modes—including AUTO, constant pressure, proportional pressure, and fixed rotor speed modes—this pump offers exceptional versatility for diverse commercial HVAC requirements. The automatic night power reduction function minimises energy use without compromising heating performance, supported by electrical and thermal protection for enhanced reliability.
Built to meet the demands of commercial HVAC systems, the BritTherm P8 65/12 pump comes with a 65mm flanged connection and delivers a maximum head of 12 metres. Its permanent magnet motor and compact rotor design ensure whisper-quiet running while maintaining high energy efficiency, ideal for environments where noise and energy costs are a concern.
The pump&amp;rsquo;s 16 automatic modes provide flexible control options: AUTO mode activates with a single button press, suitable for approximately 80% of existing heating systems. Five constant pressure modes (CP1 to CP5) cater to stable flow rate applications, while five proportional pressure modes (PP1 to PP5) adjust dynamically for variable flow demands. Additionally, five fixed rotor speed modes (CS1 to CS5) allow traditional manual speed selection.
Energy efficiency is further improved with the automatic night power reduction feature, cutting power consumption down to 5 watts during low-demand periods without affecting heating quality. Robust electrical and thermal protection mechanisms guard against external damage unrelated to pump operation, ensuring longevity and dependable performance in commercial settings.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Heavy-duty 65mm flanged pump for commercial heating systems ✅ Permanent magnet motor for quiet, energy-efficient operation ✅ Compact rotor technology reduces noise and power use ✅ 16 automatic operation modes for versatile system control ✅ Simple one-button AUTO mode activation ✅ Five constant pressure modes (CP1–CP5) for stable flow systems ✅ Five proportional pressure modes (PP1–PP5) for variable flow systems ✅ Five fixed rotor speed modes (CS1–CS5) for manual control ✅ Automatic night power reduction to 5 watts for energy saving ✅ Electrical and thermal protection for enhanced reliability</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-65-12-661996003-p23637</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p8-series-p8-65-12-661996003-p23637</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P3 Series P3 25/6-180 (661995511)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-6-180-661995511-p23584"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p3-series-p3-25-6-180-661995511-p23584-67769_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P3 Series P3 25/6-180 (661995511)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-6-180-661995511-p23584">BritTherm Automatic Сirculator Pump P3 Series P3 25/6-180 (661995511)</a></p>
<p>The BritTherm P3 25/6-180 Circulator Pump is a high-performance solution for domestic heating systems requiring a 180mm body length. With a 25mm connection size and 6-metre head, it provides reliable circulation across extended pipe runs. Featuring nine automatic modes—including AUTO, constant pressure, proportional pressure, and fixed-speed settings—it balances performance with energy efficiency. Its automatic night mode cuts power usage to just 5 watts, ideal for eco-conscious households.
Designed for flexible and efficient heating system circulation, the BritTherm P3 25/6-180 Circulator Pump is the ideal upgrade or replacement for systems that require a 180mm pump length. It features a 25mm connection, a powerful 6-metre head, and nine operation modes tailored to suit a wide variety of domestic heating setups.
The intuitive AUTO mode adapts performance automatically to match system demand, while constant pressure (CP1, CP2) and proportional pressure (PP1, PP2) modes allow for custom settings based on installation type. The traditional three-speed manual settings offer straightforward operation when preferred.
Its accessible control panel allows for discreet installation, while the built-in electrical and thermal protection ensures long-term reliability. With an energy-saving night mode reducing consumption to just 5 watts, this pump is engineered for comfort and efficiency.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Extended 180mm body with 25mm connections ✅ 6-metre head for excellent circulation performance ✅ AUTO mode for smart adaptive control ✅ CP1 &amp;amp; CP2 constant pressure settings ✅ PP1 &amp;amp; PP2 proportional pressure control ✅ Three fixed-speed settings for manual operation ✅ Night mode cuts energy use to just 5 watts ✅ Electrical and thermal protection included ✅ Ideal for standard and retrofit heating systems ✅ Simple button control for all modes</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-6-180-661995511-p23584</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-6-180-661995511-p23584</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P3 Series P3 25/7-180 (661995515)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-180-661995515-p23586"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-180-661995515-p23586-67777_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P3 Series P3 25/7-180 (661995515)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-180-661995515-p23586">BritTherm Automatic Сirculator Pump P3 Series P3 25/7-180 (661995515)</a></p>
<p>The BritTherm P3 25/7-180 Circulator Pump delivers robust performance and energy-efficient circulation for domestic heating systems. Designed with a 180mm body and a 7-metre head, it suits standard installations requiring extra length. With nine intelligent operating modes, including AUTO, constant and proportional pressure, and classic speed settings, this pump adapts effortlessly to changing system demands while saving energy with automatic night power reduction.
Built for high-performance domestic heating systems, the BritTherm P3 25/7-180 Circulator Pump combines strong circulation with flexible installation. Featuring a 25mm connection size and an extended 180mm body, it&amp;rsquo;s ideal for replacing longer standard pumps. With a 7-metre head, it efficiently moves water throughout multi-level or larger homes.
This model includes nine user-friendly operation modes. AUTO mode uses built-in intelligence to optimise performance for your heating system. The two constant pressure (CP1, CP2) and two proportional pressure (PP1, PP2) settings let you fine-tune system pressure based on flow. For traditionalists, three fixed-speed settings allow manual control across the full power range.
Energy-saving features include automatic night mode, dropping consumption to just 5 watts without compromising warmth. Electrical and thermal protection systems safeguard the pump against power surges and overheating, ensuring reliable and durable operation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 180mm extended body for standard pump replacements ✅ High-performance 7-metre head for large systems ✅ 25mm connections for easy integration ✅ AUTO mode for dynamic system adjustment ✅ CP1 &amp;amp; CP2 for constant pressure control ✅ PP1 &amp;amp; PP2 proportional pressure settings ✅ Manual 3-speed operation ✅ Night mode for reduced power use (5 watts) ✅ Thermal and electrical protection built-in ✅ Ideal for larger or multi-floor heating systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-180-661995515-p23586</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p3-series-p3-25-7-180-661995515-p23586</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595-67797_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595">BritTherm Automatic Сirculator Pump P4 Series P4 25/4-180 (661995603)</a></p>
<p>The BritTherm P4 25/4-180 Circulator Pump offers high performance and installation flexibility for modern HVAC systems. With a 180mm body length and 4-metre head, this 25mm pump is suitable for larger installations, heat interface units, and underfloor heating. Featuring 11 automatic work programmes and PWM remote control compatibility, it adapts to a wide range of heating demands while improving efficiency and control.
Designed for demanding domestic and commercial systems, the BritTherm P4 25/4-180 Circulator Pump combines intelligent functionality with exceptional flexibility. Its longer 180mm body makes it ideal for retrofits and systems requiring extended fitting space, while the 25mm connections and 4-metre head ensure reliable circulation across standard heating loops.
Equipped with 11 work modes—including AUTO mode, three constant pressure settings (CP1–CP3), and three proportional pressure settings (PP1–PP3)—the pump can automatically adapt to changing flow demands, making it perfect for underfloor heating and zoned systems. Traditional fixed-speed modes are also available for simpler setups.
The integrated PWM control interface allows for remote pump frequency management using compatible thermostats such as Siemens and Honeywell, supporting energy-saving smart home installations. Built-in electrical and thermal protection safeguards against system faults and ensures long-term reliability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 25mm connections with a 4-metre head – ideal for compact and mid-size heating systems ✅ 180mm extended body – suitable for installations needing more reach ✅ 11 intelligent modes including AUTO, constant, and proportional pressure control ✅ PWM interface supports remote control from smart thermostats ✅ Compatible with major brands like Siemens and Honeywell ✅ Excellent for boilers, HIUs, heat pumps, and underfloor heating ✅ AUTO mode adjusts output to system needs automatically ✅ Electrical and thermal protection guards against damage ✅ Night power reduction for energy-efficient operation ✅ Simple user interface for fast setup and configuration</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-4-180-661995603-p23595</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P4 Series P4 25/6-180 (661995607)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-6-180-661995607-p23597"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p4-series-p4-25-6-180-661995607-p23597-67804_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P4 Series P4 25/6-180 (661995607)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-6-180-661995607-p23597">BritTherm Automatic Сirculator Pump P4 Series P4 25/6-180 (661995607)</a></p>
<p>The BritTherm P4 25/6-180 Circulator Pump is a high-performance solution for larger domestic and light commercial heating systems. Featuring a 6-metre head and a 180mm body, this model is perfect for systems requiring extended spacing or direct replacement of longer pumps. With 11 automatic work modes and PWM compatibility, it&#039;s ideal for smart-controlled, energy-efficient setups using boilers, HIUs, or heat pumps.
Designed for powerful performance and intelligent control, the BritTherm P4 25/6-180 brings adaptability and efficiency to a wide range of heating applications. With 25mm ports and a 180mm body length, it provides a practical solution for systems with specific installation requirements.
This model supports 11 automatic work programmes, including AUTO mode for most installations, three constant pressure modes for underfloor heating, and three proportional pressure modes for varying flow rates. It also features three fixed-speed settings for compatibility with traditional systems.
A standout feature is its built-in PWM function, allowing remote speed control via low-voltage cables, fully compatible with control systems from major brands like Siemens and Honeywell. Safety is prioritised with built-in thermal and electrical protection, ensuring reliable performance even in demanding environments.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 25mm connections with extended 180mm body length ✅ 6-metre head – suitable for larger heating circuits and zoned systems ✅ 11 operating modes for maximum flexibility ✅ AUTO, proportional, and constant pressure control ✅ PWM compatibility for smart thermostats and BMS integration ✅ Excellent for underfloor heating and mixed radiator systems ✅ Electrical and thermal protection prevents pump damage ✅ One-button operation for quick setup ✅ Ideal for both new builds and replacement installations ✅ BritTherm quality for long-lasting performance</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-6-180-661995607-p23597</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-6-180-661995607-p23597</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P4 Series P4 25/8-130 (661995610)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-130-661995610-p23598"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-130-661995610-p23598-67809_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P4 Series P4 25/8-130 (661995610)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-130-661995610-p23598">BritTherm Automatic Сirculator Pump P4 Series P4 25/8-130 (661995610)</a></p>
<p>The BritTherm P4 25/8-130 Circulator Pump delivers powerful performance and high-efficiency circulation for larger heating systems. With an 8-metre head and compact 130mm body length, it&#039;s perfect for high-demand domestic and light commercial installations. Its integrated PWM function ensures compatibility with smart controls, while 11 operating modes make it highly versatile for any HVAC application, including HIUs, heat pumps, and boilers.
Engineered for maximum performance and system flexibility, the BritTherm P4 25/8-130 is a robust circulator pump with a high 8-metre head, ideal for demanding applications such as large heating zones, multi-floor systems, and energy-efficient upgrades.
Its 25mm connections and standard 130mm body length make installation simple, while the advanced control options cater to both traditional and modern setups. The pump features AUTO mode, three fixed-speed modes, three constant pressure settings, and three proportional pressure modes. Whether you&#039;re maintaining consistent flow in underfloor systems or managing pressure in complex radiator layouts, this pump adapts effortlessly.
The PWM control capability allows remote frequency adjustment via low-voltage cables, integrating smoothly with thermostats and controllers from leading brands like Honeywell and Siemens. Built-in thermal and electrical protection safeguards against damage from power fluctuations or system anomalies.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ High-performance 8-metre head for demanding heating systems ✅ Compact 130mm body for standard pump replacements ✅ 11 intelligent work modes, including AUTO and pressure-based settings ✅ PWM-compatible for smart controls and home automation systems ✅ Suitable for underfloor heating, radiators, HIUs, and heat pumps ✅ One-button operation simplifies setup and control ✅ Thermal and electrical protection for extended reliability ✅ Versatile integration with modern and legacy systems ✅ Whisper-quiet operation for noise-sensitive environments ✅ Manufactured to BritTherm&amp;rsquo;s high standards for long-term durability</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-130-661995610-p23598</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-130-661995610-p23598</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P4 Series P4 25/8-180 (661995611)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-180-661995611-p23599"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-180-661995611-p23599-67814_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P4 Series P4 25/8-180 (661995611)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-180-661995611-p23599">BritTherm Automatic Сirculator Pump P4 Series P4 25/8-180 (661995611)</a></p>
<p>The BritTherm P4 25/8-180 Circulator Pump is a high-efficiency solution designed for large-capacity heating systems. With a powerful 8-metre head and extended 180mm body, this model is ideal for larger pipework installations requiring maximum flow and flexibility. Featuring 11 intelligent operating modes and full PWM control compatibility, it integrates seamlessly with modern heating systems including HIUs, boilers, and heat pumps.
Designed for high-output systems, the BritTherm P4 25/8-180 provides robust circulation across all types of HVAC applications. Its 180mm body and 25mm connections are perfect for commercial or large-scale domestic systems where a longer pump body is required for retrofit or design compliance.
With an impressive 8-metre head, the P4 25/8-180 delivers reliable performance in complex installations such as multi-zone heating and underfloor layouts. The AUTO mode suits most heating systems, while the constant and proportional pressure settings ensure optimal efficiency across varying flow demands.
Equipped with PWM control, this pump connects to low-voltage thermostat systems from brands like Siemens and Honeywell, enabling smart, responsive control. Built-in electrical and thermal protection features provide peace of mind against power faults and overheating, helping maintain pump integrity over time.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Extended 180mm body for larger pipework configurations ✅ High 8-metre head ideal for demanding heating systems ✅ 11 programmable modes including AUTO and pressure control options ✅ PWM-compatible for smart home and commercial system integration ✅ Perfect for underfloor heating, radiators, HIUs, and energy-efficient upgrades ✅ Simple one-button operation for quick setup and adjustments ✅ Thermal and electrical protection enhances system safety ✅ Compatible with leading control systems including Siemens and Honeywell ✅ Silent operation, suitable for domestic or commercial settings ✅ Engineered by BritTherm for long-term reliability and performance</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-180-661995611-p23599</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p4-series-p4-25-8-180-661995611-p23599</link>
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              <pubDate>Sun, 11 Oct 2026 02:05:29 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/9-180 (661995317)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-9-180-661995317-p23544"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-9-180-661995317-p23544-67681_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/9-180 (661995317)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-9-180-661995317-p23544">BritTherm Automatic Сirculator Pump P1 Series P1 25/9-180 (661995317)</a></p>
<p>The BritTherm P1 25/9-180 Automatic Circulator Pump is built for robust heating systems requiring extended reach and pressure. With a high-performance 9-metre head and full-length 180mm body, it offers maximum efficiency and adaptability. The smart AUTO Mode ensures energy-saving operation while delivering optimal comfort. Additional modes, energy-saving night function, and integrated safety protection make this pump a powerful and reliable choice.
Engineered for larger heating systems, the BritTherm Automatic Circulator Pump P1 Series P1 25/9-180 provides powerful 9-metre head performance in a standard 180mm configuration. Ideal for domestic and commercial use, this pump combines cutting-edge intelligent operation with classic manual control.
Its AUTO Mode automatically adjusts to system demands for minimal energy use without sacrificing heating efficiency. Installers and users can also opt for one of three fixed-speed settings, making it suitable for both new systems and upgrades.
An integrated night mode cuts power usage to just 5 watts when heating demand is low. Built-in electrical and thermal protection ensures long-term durability by guarding against voltage surges and overheating.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ High 9-metre head for demanding heating applications ✅ Full 180mm body size for standard installations ✅ AUTO Mode adapts to system requirements automatically ✅ Three fixed-speed settings for flexible control ✅ 5W automatic night energy-saving mode ✅ Electrical &amp;amp; thermal safety protection ✅ Easy single-button operation</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-9-180-661995317-p23544</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-9-180-661995317-p23544</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P2 Series P2 25/4-130 (661995402)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-4-130-661995402-p23559"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p2-series-p2-25-4-130-661995402-p23559-67613_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P2 Series P2 25/4-130 (661995402)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-4-130-661995402-p23559">BritTherm Automatic Сirculator Pump P2 Series P2 25/4-130 (661995402)</a></p>
<p>The BritTherm P2 25/4-130 circulator pump is designed to provide superior control and efficiency in heating systems. With nine built-in automatic operation modes, this pump adapts intelligently to various system demands, ensuring optimal comfort while minimising energy consumption. Its compact 130mm length and 4-metre head make it ideal for a broad range of residential and commercial heating applications.
The BritTherm Automatic Circulator Pump P2 25/4-130 stands out with its extensive nine automatic operation modes, offering unrivalled flexibility for modern heating systems. It features an AUTO mode suitable for most installations, alongside two constant pressure modes (CP1 and CP2) and two proportional pressure modes (PP1 and PP2) that adjust pump performance based on system pressure.
In addition to the three fixed speeds for manual control, the P2 25/4-130 includes a night operating mode, which reduces energy consumption to just 5 watts without sacrificing heating quality. The pump also boasts electrical and thermal protection systems, preventing breakdowns caused by external factors unrelated to its operation.
Designed for reliable and quiet operation, this pump ensures efficient water circulation and is ideal for optimising energy use in domestic and commercial heating setups.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 4-metre head suitable for light to moderate resistance systems ✅ Compact 130mm length with standard 1&quot; BSP connections ✅ Nine automatic operation modes for versatile control ✅ AUTO mode covers 80% of heating system types ✅ Two constant pressure modes (CP1 &amp;amp; CP2) for stable pressure ✅ Two proportional pressure modes (PP1 &amp;amp; PP2) adapting to system pressure ✅ Three fixed speeds for manual operation ✅ Night mode reduces power to 5 watts for energy savings ✅ Electrical and thermal protection for enhanced durability ✅ Quiet and reliable pump operation</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-4-130-661995402-p23559</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-4-130-661995402-p23559</link>
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              <pubDate>Sun, 11 Oct 2026 02:05:29 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P2 Series P2 25/7-130 (661995414)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-7-130-661995414-p23565"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p2-series-p2-25-7-130-661995414-p23565-67728_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P2 Series P2 25/7-130 (661995414)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-7-130-661995414-p23565">BritTherm Automatic Сirculator Pump P2 Series P2 25/7-130 (661995414)</a></p>
<p>The BritTherm P2 25/7-130 Circulator Pump delivers superior performance in a compact 130mm body with 25mm connections and a powerful 7-metre head height. Ideal for domestic or light commercial heating systems, this pump adapts intelligently to demand with nine automatic modes. From AUTO and constant pressure to proportional pressure and fixed speed settings, this model provides flexible, energy-saving control. With added thermal and electrical protection, it&#039;s a smart, durable solution for system efficiency and reliability.
The BritTherm P2 25/7-130 is a compact yet powerful circulator pump designed to meet the demands of modern heating systems. Its 25mm ports and 130mm length allow for easy installation in limited spaces, while the 7-metre head ensures robust circulation across larger or multi-floor systems.
The pump features nine adaptive control modes. AUTO Mode offers a one-touch solution that meets the needs of around 80% of typical installations. Constant Pressure Modes (CP1 &amp;amp; CP2) maintain pressure regardless of system flow, while Proportional Pressure Modes (PP1 &amp;amp; PP2) adjust based on real-time changes, improving comfort and reducing energy usage. For those preferring manual operation, three traditional fixed speeds are available.
Night Mode drops energy usage down to just 5 watts without compromising performance. Plus, integrated electrical and thermal safety protections ensure reliable operation in any scenario. This pump is ideal for installers and property owners looking to balance performance, efficiency, and flexibility.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Powerful 7m head with 25mm inlet/outlet ✅ Compact 130mm body for easy installation ✅ One-touch AUTO Mode suits most systems ✅ Constant &amp;amp; proportional pressure options for precise control ✅ Manual 3-speed selection for legacy systems ✅ Night Mode reduces energy use to 5W ✅ Built-in thermal and electrical protection ✅ Suitable for homes or light commercial systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-7-130-661995414-p23565</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-7-130-661995414-p23565</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P2 Series P2 25/8-180 (661995417)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567-67738_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P2 Series P2 25/8-180 (661995417)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567">BritTherm Automatic Сirculator Pump P2 Series P2 25/8-180 (661995417)</a></p>
<p>The BritTherm P2 25/8-180 Circulator Pump is designed to deliver powerful and efficient heating system circulation. Featuring a 25mm connection size and an 8-metre head, it is ideal for medium to larger heating systems requiring reliable flow and pressure. Equipped with nine automatic operating modes including AUTO, constant and proportional pressure settings, plus three manual speeds, it adapts perfectly to system demands. Its energy-saving Night Mode reduces consumption to just 5 watts, and built-in electrical and thermal protection safeguards pump longevity.
The BritTherm P2 25/8-180 Circulator Pump combines performance and smart technology to enhance heating system efficiency and comfort. With a 25mm inlet/outlet and 180mm pump body, it fits standard heating setups while providing an impressive 8-metre head for effective water circulation across various system sizes.
Its nine built-in modes allow it to intelligently respond to heating system changes. AUTO Mode simplifies use for most systems, while CP1 and CP2 constant pressure modes ensure steady pressure irrespective of flow rate. The PP1 and PP2 proportional pressure modes dynamically adjust pump performance based on system pressure fluctuations. For users preferring manual control, three fixed speed settings provide flexibility. The Night Mode significantly lowers power consumption during off-peak periods without compromising system performance.
Electrical and thermal protection features prevent damage from external electrical faults or overheating, ensuring durability and peace of mind. The pump is ideal for modern installations and upgrades requiring smart, energy-efficient circulation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ 25mm connection size, suitable for medium to large systems ✅ 8m head for excellent flow and pressure control ✅ AUTO Mode for easy, adaptive operation ✅ Constant pressure modes (CP1, CP2) for stable system performance ✅ Proportional pressure modes (PP1, PP2) for dynamic adjustment ✅ Three manual fixed speeds for flexible control ✅ Energy-saving Night Mode reduces consumption to 5W ✅ Electrical and thermal protection for added reliability ✅ Suitable for residential and commercial heating systems</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p2-series-p2-25-8-180-661995417-p23567</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/4-130 (661995301)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-4-130-661995301-p23534"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-4-130-661995301-p23534-68125_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/4-130 (661995301)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-4-130-661995301-p23534">BritTherm Automatic Сirculator Pump P1 Series P1 25/4-130 (661995301)</a></p>
<p>The BritTherm Automatic Circulator Pump P1 Series P1 25/4-130 is a modern, intelligent solution for heating systems, offering advanced automation and impressive energy efficiency. Featuring four operation modes—including three fixed speeds and an intelligent AUTO mode—it adapts to your heating needs effortlessly. Designed with an automatic night reduction function and built-in thermal and electrical protection, this pump delivers reliable performance with ultra-low energy consumption, making it ideal for both new installations and system upgrades.
The BritTherm P1 Series P1 25/4-130 Circulator Pump is engineered for precision, flexibility, and efficiency. With four built-in modes, including three selectable fixed speeds and a smart AUTO mode, it offers the adaptability needed to ensure your heating system operates at peak performance.
The AUTO mode intelligently adjusts the pump&amp;rsquo;s output based on real-time demand, helping to optimise comfort while significantly lowering energy usage. A dedicated night-time reduction function allows the pump to operate at just 5 watts, making it exceptionally cost-effective.
Additional features include electrical and thermal protection mechanisms that safeguard the pump from potential system faults or external issues. Whether for domestic or light commercial use, this high-performing, low-maintenance pump is a dependable choice for installers and homeowners alike.
Features &amp;amp; Benefits: ✅ Four operation modes, including three fixed speeds and AUTO mode ✅ AUTO mode dynamically adjusts to system requirements ✅ Night-time energy-saving function reduces power to 5W ✅ Easy single-button operation for all modes ✅ Built-in thermal and electrical protection ✅ Quiet, smooth operation ideal for residential settings ✅ Compact 130mm length fits standard installations ✅ Energy-efficient performance reduces running costs</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-4-130-661995301-p23534</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-4-130-661995301-p23534</link>
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              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/5-130 (661995304)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-130-661995304-p23536"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-130-661995304-p23536-67593_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/5-130 (661995304)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-130-661995304-p23536">BritTherm Automatic Сirculator Pump P1 Series P1 25/5-130 (661995304)</a></p>
<p>The BritTherm P1 25/5-130 Circulator Pump is a compact yet powerful option for domestic heating systems. Featuring intelligent AUTO mode, three manual speed settings, and a night-time energy-saving function, this 130mm pump combines flexibility with high performance. With robust thermal and electrical protection and a compact 1&quot; connection size, it&#039;s ideal for tight installations requiring reliable circulation and optimal efficiency.
Designed to meet the demands of modern domestic heating systems, the BritTherm Automatic Circulator Pump P1 25/5-130 delivers efficient and adaptive performance in a compact 130mm body. The smart AUTO mode automatically adjusts output to suit system requirements, enhancing comfort and reducing energy use.
For installers seeking manual control, the pump also features three selectable fixed speeds, accessible with a simple button press. During off-peak periods, the automatic night-time reduction function cuts power consumption to as low as 5 watts—saving energy without compromising system performance.
Built with electrical and thermal protection as standard, the P1 25/5-130 offers added reliability and peace of mind. It&#039;s a practical and intelligent choice for smaller pipework setups, such as 1&quot; systems in homes or small commercial premises.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Compact 130mm body for easy domestic installation ✅ 1&quot; BSP connections for common heating systems ✅ Intelligent AUTO mode adjusts to system demands ✅ Three fixed speeds for flexible manual control ✅ Night-time power reduction down to 5W ✅ Built-in thermal and electrical protection ✅ Quiet and efficient operation ✅ Simple one-button interface</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-130-661995304-p23536</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-130-661995304-p23536</link>
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          <item>
              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537-67597_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537">BritTherm Automatic Сirculator Pump P1 Series P1 25/5-180 (661995305)</a></p>
<p>The BritTherm P1 25/5-180 Circulator Pump is designed for optimal performance in larger heating systems requiring a 180mm pump body. Equipped with smart AUTO mode, three manual speed settings, and an energy-saving night function, it intelligently adapts to system demands while keeping energy usage low. With electrical and thermal protection, it ensures reliable, long-lasting operation in both domestic and light commercial environments.
The BritTherm Automatic Circulator Pump P1 25/5-180 offers smart, energy-efficient heating control in a robust 180mm format. Ideal for homes and small commercial systems, this model automatically adjusts its performance using intelligent AUTO mode to match real-time system requirements—delivering comfort while reducing energy consumption.
Installers can manually select between three fixed-speed settings for tailored control when preferred, and the integrated night-time reduction mode drops power usage to as low as 5 watts when demand is low.
With built-in electrical and thermal protection, the pump resists damage from power surges or overheating, ensuring consistent and dependable circulation. The 180mm body provides flexibility for systems that require a longer fitting size, making the P1 25/5-180 a reliable upgrade or replacement choice.
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Features &amp;amp; Benefits: ✅ 180mm body ideal for larger heating systems ✅ Smart AUTO mode adapts to system demand ✅ Manual fixed-speed operation with 3 selectable settings ✅ Energy-saving night function reduces power to 5W ✅ Integrated thermal and electrical safety protection ✅ 1&quot; BSP connections for standard system compatibility ✅ Quiet operation with low vibration ✅ Easy one-button interface for quick adjustments</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-5-180-661995305-p23537</link>
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          <item>
              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/7-130 (661995310)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-130-661995310-p23539"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-130-661995310-p23539-67655_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/7-130 (661995310)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-130-661995310-p23539">BritTherm Automatic Сirculator Pump P1 Series P1 25/7-130 (661995310)</a></p>
<p>The BritTherm P1 25/7-130 Automatic Circulator Pump features four built-in operation modes, designed to adapt intelligently to any domestic heating system. Its AUTO Mode optimises performance to deliver excellent heating comfort while minimising energy use. The pump also includes a night power reduction function that cuts energy consumption to just 5 watts without compromising system quality.
The BritTherm Automatic Circulator Pump P1 Series P1 25/7-130 is a highly efficient pump designed for domestic heating systems requiring adaptable and intelligent circulation. With four automatic modes, including three fixed speeds and an advanced AUTO Mode, the pump tailors its performance to match your system&amp;rsquo;s demands, ensuring optimal comfort and energy savings.
The three fixed speeds, selectable with a single button, offer full power range utilisation from minimum to maximum, providing flexibility for diverse heating setups. The intelligent AUTO Mode automatically adjusts the pump&amp;rsquo;s operation based on real-time heating requirements, reducing energy consumption while maintaining system efficiency.
An automatic night power reduction function further decreases energy usage to 5 watts during off-peak periods, delivering significant cost savings without sacrificing heating quality.
Additionally, the pump is protected by advanced electrical and thermal safety systems that safeguard against external faults, ensuring reliable and durable operation.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Four automatic operation modes including AUTO and fixed speeds ✅ Intelligent adjustment for optimal heating comfort and efficiency ✅ Automatic night power reduction cuts energy use to 5 watts ✅ Easy single-button control for mode selection ✅ Electrical and thermal protection for enhanced reliability ✅ Suitable for any domestic heating system ✅ Compact design for installation in concealed spaces</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-130-661995310-p23539</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-130-661995310-p23539</link>
            </item>
          <item>
              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/7-180 (661995311)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-180-661995311-p23540"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-180-661995311-p23540-67659_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/7-180 (661995311)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-180-661995311-p23540">BritTherm Automatic Сirculator Pump P1 Series P1 25/7-180 (661995311)</a></p>
<p>The BritTherm P1 25/7-180 Automatic Circulator Pump offers four intelligent operation modes designed to suit any domestic heating system. Its AUTO Mode adapts seamlessly to heating demands, ensuring comfort while minimising energy use. With a night power reduction feature lowering consumption to just 5 watts, this pump provides efficient and reliable heating circulation.
The BritTherm Automatic Circulator Pump P1 Series P1 25/7-180 is engineered for flexible, energy-efficient operation in domestic heating systems. It features four built-in operation modes, including three fixed speeds and an intelligent AUTO Mode that automatically adjusts performance to the heating system&#039;s needs.
The three fixed speeds enable users to manually select the required power level, offering versatility for different heating setups. The AUTO Mode optimises energy consumption by adapting to real-time demands, striking a balance between efficiency and comfort.
Additionally, the pump incorporates an automatic night power reduction function, cutting power usage to 5 watts during off-peak times without compromising heating quality. This results in substantial energy savings and lower running costs.
Advanced electrical and thermal protection safeguards the pump from external faults, enhancing its reliability and durability over time.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Four automatic operation modes including AUTO and fixed speeds ✅ Intelligent adjustment for optimal comfort and energy savings ✅ Night power reduction function reduces consumption to 5 watts ✅ Single-button control for easy mode selection ✅ Electrical and thermal protection systems for reliability ✅ Suitable for all domestic heating systems ✅ Compact design ideal for concealed installation</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-180-661995311-p23540</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-7-180-661995311-p23540</link>
            </item>
          <item>
              <pubDate>Thu, 01 Oct 2026 20:20:27 +0100</pubDate>
              <title>BritTherm Automatic Сirculator Pump P1 Series P1 25/8-130 (661995313)</title>
              <description><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-130-661995313-p23541"><img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" data-src="http://www.macdonaldplumbingsupplies.com/images/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-130-661995313-p23541-67666_thumb.jpg" alt="BritTherm Automatic Сirculator Pump P1 Series P1 25/8-130 (661995313)"  class="lazyload" /></a>
<p><a href="http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-130-661995313-p23541">BritTherm Automatic Сirculator Pump P1 Series P1 25/8-130 (661995313)</a></p>
<p>The BritTherm P1 25/8-130 Automatic Circulator Pump is designed with four automatic operation modes to suit any domestic heating system. Its intelligent AUTO Mode adjusts performance for maximum comfort and minimal energy use. The night power reduction function lowers energy consumption to just 5 watts, ensuring efficient operation and cost savings.
The BritTherm Automatic Circulator Pump P1 Series P1 25/8-130 offers flexible and efficient heating circulation with four built-in modes, including three fixed speeds and a smart AUTO Mode. The fixed speeds provide manual control over pump power, while the AUTO Mode intelligently adapts to the heating system&amp;rsquo;s requirements to maintain comfort while reducing energy use.
An automatic night power reduction feature further enhances energy efficiency by lowering consumption to 5 watts during low-demand periods, without sacrificing heating quality.
The pump is easy to operate with a single button for mode selection and includes advanced electrical and thermal protection systems that safeguard the pump from external damage, ensuring long-lasting reliability.
&amp;nbsp;
Features &amp;amp; Benefits: ✅ Four automatic operation modes including AUTO and fixed speeds ✅ Intelligent adaptation for optimal comfort and energy efficiency ✅ Night power reduction function reduces consumption to 5 watts ✅ Simple single-button control for easy operation ✅ Electrical and thermal protection for enhanced durability ✅ Suitable for all domestic heating systems ✅ Compact design fits in concealed spaces</p></description>
              <guid>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-130-661995313-p23541</guid>
              <link>http://www.macdonaldplumbingsupplies.com/heating-c6/pumps-c2136/brittherm-automatic-сirculator-pump-p1-series-p1-25-8-130-661995313-p23541</link>
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