MacDonald Plumbing Supplies MacControl Dual Channel Programmer

MacControl Dual Channel Programmer is a mains powered digital programmer designed to provide flexible time based control of central heating and hot water systems. With independent channels for heating and hot water, it allows installers and homeowners to create schedules suited to their daily routines. The programmer is compatible with gravity fed and fully pumped systems, including S plan and Y plan configurations. Multiple programming options, three ON/OFF periods per channel, holiday mode, frost protection and useful override functions provide precise and convenient control for modern residential heating systems.

MacDonald Plumbing Supplies MacVessel Sealed System Filling Kit

The MacVessel Sealed System Filling Kit provides the essential components required for filling and monitoring sealed central heating systems using expansion vessels from 8 to 80 litres. The kit includes a filling loop with two 15mm compression fittings, a 3 bar safety relief valve and gauge, a 3/4 inch manifold, and a red or blue safety valve cap. Supplied as a convenient kit, it helps installers bring the key components together for efficient system installation and servicing. Suitable for use with a range of sealed heating systems and expansion vessel sizes.

MacDonald Plumbing Supplies Dosing Funnel

The MacDonald Plumbing Supplies Dosing Funnel provides a fast, clean, and convenient method of introducing inhibitors, sludge removers, and other heating system treatment chemicals into a central heating system via a radiator. Supplied with a ½" BSP adaptor, it connects directly to the radiator, allowing chemicals to be poured into the system with minimal mess. It is an essential tool for heating engineers carrying out routine servicing and system maintenance.

MacDonald Plumbing Supplies MacTape Cloth Insulation Tape 50mm x 50mtr Silver

The MacTape Cloth Insulation Tape 50mm x 50Mtr Silver is a reliable, heavy-duty solution designed for professional sealing, jointing and general repair applications. Manufactured from strong yet flexible polythene-coated fabric, this cloth tape delivers excellent durability while remaining easy to handle and apply. The aggressive pressure-sensitive high-tack adhesive ensures a secure bond on a wide range of surfaces, making it ideal for both indoor and outdoor use. With good water resistance and excellent conformability, this tape is well suited for plumbing, heating, electrical and general maintenance tasks where a dependable seal is required.

MacDonald Plumbing Supplies MacValve Water Drain Valve with Hose Tail ½" BSP

The MacValve Water Drain Valve is a durable and reliable solution for draining water from boilers and manifolds. Featuring a ½" BSP hose tail connection, a secure lever valve, and a closing cap with ring nut, this valve ensures efficient water drainage while preventing leaks.

MacDonald Plumbing Supplies MacShock 15mm Water Shock Arrestor - Diaphragm

The MacShock 15mm Water Shock Arrestor - Diaphragm is a highly effective solution for eliminating water hammer and pressure surges in plumbing systems. Its compact size allows for flexible installation in confined spaces, while the internal diaphragm technology efficiently absorbs sudden changes in water flow. This shock arrestor is ideal for use with water meters, non-return valves, and appliances such as dishwashers and washing machines. Fully WRAS approved, it ensures quieter operation and long-term protection for your plumbing network, safeguarding boilers, pipes, and fittings from damage caused by hydraulic shock.

MacDonald Plumbing Supplies Automatic Air Vent ⅛ Chrome

The Automatic Air Vent ⅛ Chrome is an essential fitting for releasing trapped air from heating and plumbing systems automatically. With a sleek chrome finish and compact design, it ensures smooth system operation while enhancing the aesthetic appeal of installations. Suitable for residential and commercial systems, this vent is highly reliable and easy to install.

MacDonald Plumbing Supplies Brass Air Vent Cap 15mm

The Brass Air Vent Cap 15mm is a durable and efficient solution for releasing trapped air from plumbing and heating systems. Made from high-quality brass, it ensures long-lasting performance while preventing air blockages that can reduce system efficiency. Easy to install and compact in design, this air vent cap is ideal for maintaining consistent pressure and ensuring smooth system operation.

MacDonald Plumbing Supplies Brass Slip Air Release Plug 15mm

The Brass Slip Air Release Plug 15mm is an essential component for effective venting of heating and plumbing systems. Designed with durability in mind, this robust brass fitting allows for the easy release of trapped air to optimise system performance. Its compact slip design ensures a quick and secure installation, making it a versatile and dependable choice for a range of applications.

MacDonald Plumbing Supplies MacScale 22mm Electrolytic Scale Reducer

The MacScale 22mm Electrolytic Scale Reducer is a reliable and maintenance-free solution for reducing limescale build-up in plumbing systems. Designed for larger 22mm pipework, it provides whole house protection using an electrolytic process that requires no chemicals or power. WRAS approved and easy to install, it helps maintain system efficiency and extend the lifespan of appliances and pipework.

MacDonald Plumbing Supplies MacScale 15mm Electrolytic Scale Reducer

The MacScale 15mm Electrolytic Scale Reducer is an effective, maintenance-free solution designed to reduce limescale build-up in plumbing systems. Suitable for both domestic and commercial use, it provides whole house protection using an electrolytic process that requires no chemicals or power. WRAS approved and easy to install with 15mm compression fittings, it helps extend the life of appliances and pipework.

MacDonald Plumbing Supplies MacPump 3 Speed Domestic Circulating Pump - 25/6-130

The MacPump 3 Speed Domestic Circulating Pump - 25/6-130 is a reliable and energy-efficient solution for circulating water in domestic heating systems. Designed for use in radiator circuits, hot water systems, and underfloor heating, it features a 3-speed manual setting for flexible control of flow rates. With a 6m head and simple plug-and-pump installation, it offers dependable performance and ease of use.

MacDonald Plumbing Supplies MacPump 1½ "A" Rated Circulating Pump

The MacPump 1½" “A” Rated Circulating Pump is a high-efficiency solution designed for domestic heating and hot water systems. Featuring a permanent magnet motor and intelligent differential pressure control, it automatically adjusts performance to suit system demand. With both variable and fixed speed settings, a 6m head, and A-rated energy efficiency, it delivers reliable performance while helping to reduce energy consumption.

MacDonald Plumbing Supplies MacChem 18Ltr Stainless Steel Dosing Pot (DPSS18)

Explore the 18Ltr Stainless Steel Dosing Pot (DPSS18), featuring durable 304 stainless steel construction, a polished finish, and wall mounting brackets. Ideal for closed systems, this dosing pot facilitates the addition of water treatments and chemicals without the need for system shutdown.

MacDonald Plumbing Supplies MacChem 25Ltr Stainless Steel Dosing Pot (DPSS25)

Explore the 25Ltr Stainless Steel Dosing Pot (DPSS25), featuring durable 304 stainless steel construction, a polished finish, and wall mounting brackets. Ideal for closed systems, this dosing pot facilitates the addition of water treatments and chemicals without the need for system shutdown.

MacDonald Plumbing Supplies MacChem 11Ltr Stainless Steel Dosing Pot (DPSS11)

Explore the 11Ltr Stainless Steel Dosing Pot (DPSS11), featuring durable 304 stainless steel construction, a polished finish, and wall mounting brackets. Ideal for closed systems, this dosing pot facilitates the addition of water treatments and chemicals without the need for system shutdown.

MacDonald Plumbing Supplies MacChem 6Ltr Stainless Steel Dosing Pot (DPSS06)

Explore the 6Ltr Stainless Steel Dosing Pot (DPSS06), featuring durable 304 stainless steel construction, a polished finish, and wall mounting brackets. Ideal for closed systems, this dosing pot facilitates the addition of water treatments and chemicals without the need for system shutdown.

MacDonald Plumbing Supplies MacChem 3.5Ltr Stainless Steel Dosing Pot (DPSS03.5)

Explore the 3.5Ltr Stainless Steel Dosing Pot (DPSS03.5), featuring durable 304 stainless steel construction, a polished finish, and wall mounting brackets. Ideal for closed systems, this dosing pot facilitates the addition of water treatments and chemicals without the need for system shutdown.

MacDonald Plumbing Supplies Universal 240V Synchron Motor

The Universal 240V Synchron Motor is a versatile component suitable for most 2-port and 3-port motorised valves in central heating systems. By replacing just the motor, you can save on costly valve replacements and avoid hiring a plumber. This DIY-friendly motor ensures your central heating system operates efficiently.

MacDonald Plumbing Supplies MacShock ½ Water Shock Arrestor - Diaphragm

The MacShock 1/2" Water Shock Arrestor - Diaphragm is a compact and efficient device designed to absorb pressure surges and prevent water hammer in plumbing systems. It is particularly useful in systems with water meters, non-return devices, and appliances like dishwashers or washing machines. With WRAS approval, this shock arrestor ensures smooth operation, reduces pipe vibrations, and helps protect boilers and other plumbing components from damage caused by sudden changes in water flow.

MacDonald Plumbing Supplies Pipe Lagging - Wrap Around Type x 7.2m

The Pipe Lagging - Wrap Around Type is available in a single roll measuring 7.2 meters. This specific type of pipe lagging is designed to be wrapped around pipes for insulation and protection. It helps prevent heat loss, condensation, and freezing in plumbing and heating systems. With a length of 7.2 meters, this roll of wrap-around pipe lagging is suitable for covering a significant portion of piping, ensuring effective insulation and contributing to improved energy efficiency and system performance.

MacDonald Plumbing Supplies Pipe Lagging 28mm - Single Roll 7.2m

The Pipe Lagging is available in a single roll measuring 7.2 meters and is designed specifically for pipes with a diameter of 28mm. This pipe lagging is used to provide insulation and protection to pipes, helping to prevent heat loss, condensation, and freezing. It's commonly used in plumbing and heating systems to improve energy efficiency and maintain optimal temperatures. With a length of 7.2 meters, this roll of pipe lagging is suitable for covering a significant length of 28mm diameter piping, ensuring effective insulation and contributing to the overall efficiency of your system.

MacDonald Plumbing Supplies Pipe Lagging 15/22mm - Single Roll 7.2m

The Pipe Lagging comes in a single roll measuring 7.2 meters and is designed to fit pipes with a diameter of 15/22mm. This pipe lagging is used to provide insulation and protection to pipes, helping to prevent heat loss and condensation. It's commonly used in plumbing and heating systems to improve energy efficiency and maintain optimal temperatures. With a length of 7.2 meters, this roll of pipe lagging is suitable for covering a significant length of piping, ensuring effective insulation and contributing to the overall efficiency of your system.

MacDonald Plumbing Supplies MacVent 15mm Compression Air Vent

The MacVent 15mm Compression Air Vent is a versatile manual air vent designed for use with 15mm compression fittings in heating, cooling, and other wet systems. Manufactured from durable brass, it can replace a standard 15mm olive to provide a convenient venting point. Suitable for both temporary and permanent applications, it offers a reusable and practical solution for installers working on vented and unvented systems.

MacDonald Plumbing Supplies Denso Protective Tape 50mm x 10Mtr

The Denso Protective Tape 50mm x 10Mtr is a highly durable self-adhesive tape designed to provide long-lasting waterproofing and corrosion protection for pipes, fittings, valves, and metal surfaces. Measuring 50mm wide and supplied on a 10-metre roll, it creates a reliable watertight and airtight barrier that helps extend the life of plumbing and industrial installations. Its flexible construction allows it to conform easily to irregular shapes, making it ideal for maintenance, repairs, and new installations.

MacDonald Plumbing Supplies MacChem C100B 500ml Corrosion Inhibitor with Biocide

The MacChem C100B 500ml Corrosion Inhibitor with Biocide is specially formulated to protect low-temperature heating systems such as underfloor heating from corrosion and microbial growth. Offering exceptional value for money, it outperforms more expensive brands while delivering reliable, long-lasting system protection. By preventing rust, limescale, and sludge, it improves heat transfer efficiency and extends system life, helping you reduce energy bills and costly repairs.  

MacDonald Plumbing Supplies MacChem C300 500ml Central Heating System Cleanser

The MacChem C300 Central Heating System Cleanser offers a powerful, cost-effective solution to maintain and restore your heating system. This 500ml formula is as effective as branded alternatives but at half the price. Designed to remove sludge, scale, and debris, it boosts efficiency, extends the lifespan of your system, and ensures optimal performance.

MacDonald Plumbing Supplies MacChem Central Heating Inhibited Antifreeze 5L Bottle

This is our own brand MacChem Inhibited Antifreeze 5L Bottle 5L bottle half the price of branded ones but the same quality

MacDonald Plumbing Supplies MacChem C500 500ml Central Heating Leak Sealer

This is our own brand MacChem C500 Internal Leak Sealer 500ml half the price of branded ones but the same quality

MacDonald Plumbing Supplies MacChem C400 500ml Central Heating Sludge Remover

This is our own brand MacChem C400 Sludge Remover 500ml half the price of branded ones but the same quality

MacDonald Plumbing Supplies MacChem C600 500ml Central Heating Powerflush

This is our own brand MacChem C600 Power Flush 500ml half the price of branded ones but the same quality

MacDonald Plumbing Supplies MacChem C700 500ml Central Heating Boiler Silencer

This is our own brand MacChem C700 Noise Silencer 500ml half the price of branded ones but the same quality

MacDonald Plumbing Supplies Drain Off Valve Type A 1/2"

The Drain Off Valve Type A 1/2" provides a reliable and efficient solution for draining water from plumbing systems.

MacDonald Plumbing Supplies Drain Off Valve Type A 3/4"

The Drain Off Valve Type A 3/4" provides an effective and convenient solution for draining water from plumbing systems.

MacDonald Plumbing Supplies MacVent 15mm Auto Air Vent Compression

The MacVent 15mm Auto Air Vent Compression offers a high-quality solution to prevent trapped air in heating systems. Built from premium materials, it operates efficiently under pressures up to 10 bar and temperatures up to 100°C, providing consistent and reliable performance in residential and commercial heating applications.

MacDonald Plumbing Supplies MacPress Long Tail Drain Off Valve Type A 15mm

The MacPress Long Tail Drain Off Valve Type A 15mm offers efficient drainage for gas, LPG, and fuel oil systems. Approved by British Gas to EN 331 standards, this durable valve is ideal for residential and commercial applications, providing reliable performance in demanding environments.     Installation Instructions for Press Fittings   1. Ensure the copper tube is cut squarely. 2. Deburr the pipe internally and externally to form a smooth edge. 3. Check that the ‘O’ ring of the fitting is seated correctly and free from impurities. 4. Do not use jointing compound, oil or grease. 5. Insert the tube to the full depth of the socket. 6. Clearly mark the tube at full depth. 7. Aline the fitting with the jaw of the tool correctly. 8. Make the press connection, using a suitable M profile jaw.

MacDonald Plumbing Supplies MacValve 15mm Type A Brass Drain Off Valve

The MacValve 15mm Type A Brass Drain Off Valve is a robust and essential component for ensuring efficient water drainage in plumbing systems. Suitable for both residential and commercial applications, this high-quality valve is designed for durability, corrosion resistance, and ease of use. Perfect for draining radiators, heating systems, and other water-filled equipment.