MacDonald Plumbing Supplies MacValve 28mm 3 Port Mid Position Motorised Valve

The MacValve 28mm 3 Port Mid Position Motorised Valve is designed to control water flow in central heating and domestic hot water systems. When installed with suitable room and cylinder thermostats, it provides automatic regulation of both services and moves to the mid position when heating and hot water are required at the same time. Designed for compatible 28mm pipework, it is supplied with compression fittings and features a synchronous motor drive with spring return action. The replaceable actuator head can be changed without draining down the system, helping simplify maintenance. An auxiliary switch, integrated manual lever and 1 metre five core flex provide useful features for professional plumbing and heating installations.

MacDonald Plumbing Supplies MacValve 22mm Mid Position Motorised Valve

The 22mm 3 Port Mid Position Motorised Valve is designed to control the flow of water in central heating and domestic hot water systems. When installed with suitable room and cylinder thermostats, it provides automatic regulation of both services, moving to the mid position when heating and hot water are required together. The valve features a synchronous motor drive with spring return action and is supplied with 22mm compression fittings. Its replaceable actuator head can be changed without draining down the system, making maintenance more straightforward. With an auxiliary switch, integrated manual lever and 1 metre five core flex, it offers practical functionality for professional plumbing and heating installations.

MacDonald Plumbing Supplies MacValve 28mm 2 Port Motorised Valve

The MacValve 28mm 2 Port Motorised Valve is designed to provide controlled water flow in central heating systems and other suitable flow control applications. Featuring a spring return mechanism and an auxiliary switch, it can be used to control the flow of water between a boiler, hot water cylinder and central heating circuit when correctly wired with a compatible room thermostat, cylinder thermostat and programmer. The valve is supplied with 28mm compression fittings and includes a 1 metre cable for electrical connection. With a replaceable actuator design, it offers a practical solution for heating engineers carrying out new installations, system upgrades and maintenance work.

MacDonald Plumbing Supplies MacValve 22mm 2 Port Motorised Valve

The MacValve 22mm 2 Port Motorised Valve is designed to provide zone control for central heating and domestic hot water systems. It uses a synchronous motor drive with spring return action to control the flow of water through the connected pipework. Supplied with compression fittings, this valve is suitable for compatible 22mm installations. The replaceable actuator head can be exchanged without draining the system, helping simplify servicing and maintenance. Additional features include an auxiliary switch, an integrated manual lever for commissioning and a 1 metre five core flex. Operating on a 230V, 50Hz supply, it provides a practical control solution for plumbers and heating engineers.

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.

Rob Pond PressFit 22mm Perfect Pump Valve Pair

The Rob Pond PressFit 22mm Perfect Pump Valve Pair PPV22-PF provides a reliable and efficient solution for connecting circulating pumps in heating systems. Designed with 22mm M profile press connections and 1½" swivel unions, these valves allow quick installation and secure pump isolation. Manufactured from durable nickel plated brass and rated to 16 bar, they offer excellent strength and long-term reliability. Supplied as a matched pair with rubber washers, they ensure a tight seal and simplify installation for professional heating engineers.

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 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.

Danfoss Motorised Valve HP22B Paddle Type 2 Port 22mm DF087N660900

The Danfoss Motorised Valve HP22B Paddle Type 2 Port 22mm DF087N660900 is a high-performance valve designed for precise flow control in domestic and commercial heating systems. Featuring a paddle type mechanism for reliable shut-off and a robust construction, it ensures efficient operation and long service life. With a high flow rate and compatibility with a range of actuators, it offers flexibility for various heating applications.

Drayton ZA5/679 2 Port Motorised Valve 22mm Compression

The Drayton ZA5/679 2 Port Motorised Valve 22mm Compression is a reliable and easy-to-install solution for controlling water flow in central heating and hot water systems. Designed with industry standard wiring and a spring-return mechanism, it ensures efficient operation and dependable performance. With a compact design and manual override functionality, it is ideal for both new installations and replacement work.

MacDonald Plumbing Supplies MacValve 15mm & 22mm Pressure Reducing Valve & Gauge

The MacValve 15mm & 22mm Pressure Reducing Valve, complete with a pressure gauge, is designed to efficiently regulate and reduce pressure in plumbing and heating systems. With dual compatibility for 15mm and 22mm pipe sizes, this valve offers flexible installation and ensures system protection by controlling excessive water pressure. Adjustable outlet pressure between 1 and 6 bar with a factory pre-set of 3 bar.