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 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 MacValve 22mm Chrome Plated Angled Auto Bypass Valve

The MacValve 22mm Chrome Plated Angled Auto Bypass Valve is designed to maintain efficient water circulation in central heating systems. It automatically opens to allow flow when thermostatic radiator valves close, preventing pressure build-up and protecting system components. With adjustable pressure settings and a durable chrome-plated finish, it offers reliable and long-lasting performance.

MacDonald Plumbing Supplies Gate Type Pump Valve 22mm WRAS Approved

This Gate Type Pump Valve (22mm) with WRAS approval provides reliable flow control for pump systems.

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.