McAlpine Ventapipe from MacDonald Plumbing & Heating Supplies http://www.macdonaldplumbingsupplies.com/rss/1/productlistings/mcalpine-ventapipe/cat987 <p><span style="text-decoration: underline;"><strong>Internal Air Admittance Valve:</strong></span></p> <p>McAlpine recommends installing Internal AAVs within the building. These valves should ideally be placed in a non-habitable area such as a duct or roof space with proper ventilation. It's crucial that they are easily accessible for maintenance purposes. Additionally, Internal AAVs must be installed in a vertical position to function effectively.</p> <p><span style="text-decoration: underline;"><strong>External Air Admittance Valve:</strong></span></p> <p>While there are no specific regulations mandating External AAVs, there are circumstances where they could be advantageous. Installing an External AAV into an external soil stack offers several benefits, including:</p> <p>&nbsp;</p> <p><span style="text-decoration: underline;"><strong>Internal Advantages:</strong></span></p> <ul> <li>Allows ventilating pipes to terminate inside the building, eliminating the need for roof penetration.</li> <li>Provides greater flexibility in designing new drainage systems.</li> <li>Facilitates easier installation of additional appliances to existing drainage systems.</li> <li>Helps avoid freezing issues associated with external pipes.</li> <li>Compatible with both plastic and metal pipes, offering versatility.</li> <li>Offers cost savings in terms of material and labour.</li> </ul> <p><span style="text-decoration: underline;"><strong>External Advantages:</strong></span></p> <ul> <li>External soil stack termination below the roofline reduces the requirement for soil pipe and fittings.</li> <li>External installation makes AAVs easily accessible for maintenance purposes.</li> <li>Reduces installation time and materials.</li> <li>Seeking guidance from the local building department may be advisable to ensure compliance with regulations.</li> </ul> <p>&nbsp;</p> <p>In summary, the choice between Internal and External AAVs depends on various factors such as design requirements, ease of access, and compliance with local building regulations. Both options provide benefits, and selecting the most suitable option will depend on the specific needs of the plumbing system and the preferences of the installer.</p> Copyright 2026 MacDonald Plumbing & Heating Supplies en Mon, 12 Oct 2026 02:05:05 +0100 Mon, 12 Oct 2026 02:05:05 +0100 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine CARBON-CAR Replacement Carbon Cartridge for MACFILTER McAlpine CARBON-CAR Replacement Carbon Cartridge for MACFILTER

McAlpine CARBON-CAR Replacement Carbon Cartridge for MACFILTER

The McAlpine CARBON-CAR Replacement Carbon Cartridge for MACFILTER is a genuine two-way activated carbon filter cartridge designed to maintain the performance and efficiency of McAlpine MACFILTER systems. Engineered for effective odour absorption and hygienic air control, this replacement cartridge helps keep waste systems fresh and operating efficiently in both domestic and commercial applications.

 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-carbon-car-replacement-carbon-cartridge-for-macfilter-p24929 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-carbon-car-replacement-carbon-cartridge-for-macfilter-p24929 Thu, 01 Oct 2026 20:20:26 +0100 McAlpine VP1 Ventapipe 25 With 1½ BSP Thread On Outlet Grey McAlpine VP1 Ventapipe 25 With 1½ BSP Thread On Outlet Grey

McAlpine VP1 Ventapipe 25 With 1½ BSP Thread On Outlet Grey

1½&rdquo; BSP thread on Outlet A1 rated

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp1-ventapipe-25-with-1-bsp-thread-on-outlet-grey-p20954 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp1-ventapipe-25-with-1-bsp-thread-on-outlet-grey-p20954 Thu, 01 Oct 2026 20:20:27 +0100 McAlpine VP100 Ventapipe 100 For 3" Or 4" Soil Pipe McAlpine VP100 Ventapipe 100 For 3&quot; Or 4&quot; Soil Pipe

McAlpine VP100 Ventapipe 100 For 3&quot; Or 4&quot; Soil Pipe

Fits 3″/75mm or 4″/110mm soil pipe Dual fit synthetic rubber finger seal outlet

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100-ventapipe-100-for-3-or-4-soil-pipe-p2133 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100-ventapipe-100-for-3-or-4-soil-pipe-p2133 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine VP100E Ventapipe 100 Internal/external For 4" Pipe Black McAlpine VP100E Ventapipe 100 Internal/external For 4&quot; Pipe Black

McAlpine VP100E Ventapipe 100 Internal/external For 4&quot; Pipe Black

The VP100E is an innovative valve suitable for internal and external use. It is easy installation as it has a simple push-fit connection. The product stops bad smells that can occur from negative pressures.

 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100e-ventapipe-100-internal-external-for-4-pipe-black-p2769 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100e-ventapipe-100-internal-external-for-4-pipe-black-p2769 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine VP100E-GR Ventapipe 100 Internal/external For 4" Pipe Grey McAlpine VP100E-GR Ventapipe 100 Internal/external For 4&quot; Pipe Grey

McAlpine VP100E-GR Ventapipe 100 Internal/external For 4&quot; Pipe Grey

Fits 4″/110mm soil pipe Dual fit synthetic rubber finger seal outlet A1 rated Can be installed above or below the flood level of connecting appliances.

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100e-gr-ventapipe-100-internal-external-for-4-pipe-grey-p2767 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100e-gr-ventapipe-100-internal-external-for-4-pipe-grey-p2767 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine VP100E-WH Ventapipe 100 Internal/external For 4" Pipe White McAlpine VP100E-WH Ventapipe 100 Internal/external For 4&quot; Pipe White

McAlpine VP100E-WH Ventapipe 100 Internal/external For 4&quot; Pipe White

Fits 4″/110mm soil pipe Dual fit synthetic rubber finger seal outlet A1 rated Can be installed above or below the flood level of connecting appliances.

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100e-wh-ventapipe-100-internal-external-for-4-pipe-white-p2768 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100e-wh-ventapipe-100-internal-external-for-4-pipe-white-p2768 Thu, 01 Oct 2026 20:23:49 +0100 McAlpine VP100N Ventapipe 100 With Solvent Weld Outlet For 4" Pipe McAlpine VP100N Ventapipe 100 With Solvent Weld Outlet For 4&quot; Pipe

McAlpine VP100N Ventapipe 100 With Solvent Weld Outlet For 4&quot; Pipe

Fits 4″/110mm soil pipe Solvent weld Outlet &nbsp;

 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100n-ventapipe-100-with-solvent-weld-outlet-for-4-pipe-p2134 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp100n-ventapipe-100-with-solvent-weld-outlet-for-4-pipe-p2134 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine VP15M Ventapipe 15 With 1¼ Universal Outlet McAlpine VP15M Ventapipe 15 With 1¼ Universal Outlet

McAlpine VP15M Ventapipe 15 With 1¼ Universal Outlet

1¼&rdquo; Universal Outlet

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp15m-ventapipe-15-with-1-universal-outlet-p2142 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp15m-ventapipe-15-with-1-universal-outlet-p2142 Thu, 01 Oct 2026 20:20:26 +0100 McAlpine VP1W Ventapipe 25 With 1½ BSP Thread On Outlet White McAlpine VP1W Ventapipe 25 With 1½ BSP Thread On Outlet White

McAlpine VP1W Ventapipe 25 With 1½ BSP Thread On Outlet White

1½&rdquo; BSP thread on Outlet A1 rated

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp1w-ventapipe-25-with-1-bsp-thread-on-outlet-white-p20955 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp1w-ventapipe-25-with-1-bsp-thread-on-outlet-white-p20955 Thu, 01 Oct 2026 20:20:27 +0100 McAlpine VP2 Ventapipe 25 With 1½ Universal Outlet Grey McAlpine VP2 Ventapipe 25 With 1½ Universal Outlet Grey

McAlpine VP2 Ventapipe 25 With 1½ Universal Outlet Grey

½&rdquo; Universal Outlet A1 rated

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp2-ventapipe-25-with-1-universal-outlet-grey-p2139 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp2-ventapipe-25-with-1-universal-outlet-grey-p2139 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine VP2W Ventapipe 25 With 1½ Universal Outlet White McAlpine VP2W Ventapipe 25 With 1½ Universal Outlet White

McAlpine VP2W Ventapipe 25 With 1½ Universal Outlet White

1½&rdquo; Universal Outlet A1 rated

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp2w-ventapipe-25-with-1-universal-outlet-white-p2140 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp2w-ventapipe-25-with-1-universal-outlet-white-p2140 Thu, 01 Oct 2026 20:20:27 +0100 McAlpine VP3 Ventapipe 25 With Integral 1½ Multi Fit Tee McAlpine VP3 Ventapipe 25 With Integral 1½ Multi Fit Tee

McAlpine VP3 Ventapipe 25 With Integral 1½ Multi Fit Tee

1½&rdquo; Multifit Tee

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp3-ventapipe-25-with-integral-1-multi-fit-tee-p2141 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp3-ventapipe-25-with-integral-1-multi-fit-tee-p2141 Thu, 01 Oct 2026 20:20:26 +0100 McAlpine VP4 Ventapipe 25 With Integral 1¼ Multi Fit Tee McAlpine VP4 Ventapipe 25 With Integral 1¼ Multi Fit Tee

McAlpine VP4 Ventapipe 25 With Integral 1¼ Multi Fit Tee

1¼&rdquo; Multifit Tee

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp4-ventapipe-25-with-integral-1-multi-fit-tee-p20956 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp4-ventapipe-25-with-integral-1-multi-fit-tee-p20956 Thu, 01 Oct 2026 20:23:49 +0100 McAlpine VP50 Ventapipe 50 With 2" Universal Outlet McAlpine VP50 Ventapipe 50 With 2&quot; Universal Outlet

McAlpine VP50 Ventapipe 50 With 2&quot; Universal Outlet

2″ Universal Outlet

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp50-ventapipe-50-with-2-universal-outlet-p2137 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp50-ventapipe-50-with-2-universal-outlet-p2137 Thu, 01 Oct 2026 20:20:26 +0100 McAlpine VP50-100 Ventapipe 50 For 2" 3" & 4" Pipe McAlpine VP50-100 Ventapipe 50 For 2&quot; 3&quot; &amp; 4&quot; Pipe

McAlpine VP50-100 Ventapipe 50 For 2&quot; 3&quot; &amp; 4&quot; Pipe

Fits 2″, 3″/75mm or 4″/110mm pipe Dual fit synthetic rubber finger seal outlet Also incorporates 2″ Universal outlet

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp50-100-ventapipe-50-for-2-3-4-pipe-p20957 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp50-100-ventapipe-50-for-2-3-4-pipe-p20957 Thu, 01 Oct 2026 20:20:27 +0100 McAlpine VP50P Ventapipe 50 For 3" & 4" Pipe McAlpine VP50P Ventapipe 50 For 3&quot; &amp; 4&quot; Pipe

McAlpine VP50P Ventapipe 50 For 3&quot; &amp; 4&quot; Pipe

Fits 3″/75mm or 4″/110mm soil pipe Dual fit synthetic rubber finger seal outlet

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp50p-ventapipe-50-for-3-4-pipe-p2136 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vp50p-ventapipe-50-for-3-4-pipe-p2136 Mon, 12 Oct 2026 02:05:05 +0100 McAlpine VPSF-40/50 Ventapipe 40/50 For Fits 1¼ 1½ & 2" Waste Pipe McAlpine VPSF-40/50 Ventapipe 40/50 For Fits 1¼ 1½ &amp; 2&quot; Waste Pipe

McAlpine VPSF-40/50 Ventapipe 40/50 For Fits 1¼ 1½ &amp; 2&quot; Waste Pipe

Fits 1¼&rdquo;, 1½&rdquo; and 2″ waste pipe Solvent weld Outlet

/soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vpsf-40-50-ventapipe-40-50-for-fits-1-1-2-waste-pipe-p2138 /soil-waste-c7/mcalpine-c903/mcalpine-air-admittance-valves-c205/mcalpine-ventapipe-c987/mcalpine-vpsf-40-50-ventapipe-40-50-for-fits-1-1-2-waste-pipe-p2138