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 MacValve WRAS Remote Filling Loop Part L Compliant with Gauge

The MacValve WRAS Remote Filling Loop Part L Compliant with Gauge is a practical and compliant solution for filling and pressurising central heating systems and heat interface units. Designed for flexible installation, it can be fitted remotely from the boiler or cylinder, making it ideal where access is limited or no integral pressure gauge is present. Supplied complete with a gauge and essential safety components, it ensures accurate pressure monitoring and safe system operation.

MacDonald Plumbing Supplies MacAntifreeze Valve 28mm V2

The MacAntifreeze Valve 28mm V2 is a highly effective solution for protecting heat source pump systems from freezing temperatures. Automatically activating when the temperature drops to 3°C, this valve opens the flow and return circuit to prevent ice formation, safeguarding the system from potential damage. With no need for glycol or ongoing maintenance, it offers a cost-effective and low-maintenance solution to ensure smooth operation in cold weather.

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 MacAnti Freeze Valve 28mm

The MacAnti Freeze Valve 28mm is designed to enable the antifreeze function in systems exposed to low outside air temperatures. This valve ensures the circuit medium is drained when temperatures reach an average value of 3℃, preventing ice formation and protecting your system, typically used with heat pumps, from potential damage.

MacDonald Plumbing Supplies MacAnti Freeze Valve 1"

The MacAnti Freeze Valve 1" is designed to enable the antifreeze function in systems exposed to low outside air temperatures. This valve ensures the circuit medium is drained when temperatures reach an average value of 3℃, preventing ice formation and protecting your system, typically used with heat pumps, from potential damage.

MacDonald Plumbing Supplies MacAnti Freeze Valve 1¼"

The MacAnti Freeze Valve 1¼" is designed to enable the antifreeze function in systems exposed to low outside air temperatures. This valve ensures the circuit medium is drained when temperatures reach an average value of 3℃, preventing ice formation and protecting your system, typically used with heat pumps, from potential damage.

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 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.