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 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 MacOverflow Equal Tee 21.5mm White PACK OF 10

The MacOverflow Equal Tee 21.5mm White is a reliable solution for forming equal branch connections within overflow waste systems. Designed to suit standard 21.5mm overflow pipe, these fittings allow a straight run with an equal branch, making them ideal for connecting multiple overflows into a single line. The white finish provides a clean, discreet appearance that blends well with most sanitaryware and visible pipework. Supplied in a handy pack of 10, they are perfect for installers who need consistent, dependable fittings for repeated jobs.

MacDonald Plumbing Supplies MacOverflow 21.5mm Overflow to 32mm Waste Adaptor Black PACK OF 10

The MacOverflow 21.5mm Overflow to 32mm Waste Adaptor Black provides a simple and reliable solution for connecting standard 21.5mm overflow pipework into 32mm waste systems. Ideal for use with basins, cisterns and appliances, this adaptor ensures a smooth transition between overflow and waste pipe sizes. The black finish offers a discreet, professional look, particularly suited to concealed or modern installations. Supplied in a practical pack of 10, it is an excellent choice for trade professionals carrying out multiple installations or maintenance work.

MacDonald Plumbing Supplies MacOverflow 21.5mm Overflow to 32mm Waste Adaptor White PACK OF 10

The MacOverflow 21.5mm Overflow to 32mm Waste Adaptor White offers a neat and reliable solution for connecting standard 21.5mm overflow pipework into 32mm waste systems. Commonly used with basins, cisterns and appliance overflows, this adaptor ensures a clean transition between pipe sizes while maintaining proper flow. The white finish is ideal for visible installations where a tidy, unobtrusive appearance is required. Supplied in a convenient pack of 10, it is well suited to trade use, maintenance work and multiple installations.

MacDonald Plumbing Supplies MacOverflow 21.5mm Overflow to 40mm Waste Adaptor Black PACK OF 10

The MacOverflow 21.5mm Overflow to 40mm Waste Adaptor Black provides a practical and reliable solution for connecting standard 21.5mm overflow pipework into 40mm waste systems. Commonly used on basins, cisterns and appliance overflows, this adaptor ensures a smooth transition between pipe sizes while maintaining correct flow and alignment. The black finish is ideal for modern installations or where pipework is visible. Supplied in a trade-friendly pack of 10, it is well suited to professional plumbers and maintenance engineers.

MacDonald Plumbing Supplies MacOverflow 21.5mm Overflow to 40mm Waste Adaptor White PACK OF 10

The MacOverflow 21.5mm Overflow to 40mm Waste Adaptor White is designed to provide a clean and reliable transition from standard 21.5mm overflow pipework into 40mm waste systems. Commonly used on basins, toilet cisterns and appliance overflows, this adaptor ensures correct alignment and dependable performance. The white finish is ideal for traditional installations or where pipework needs to blend discreetly with sanitaryware. Supplied in a convenient pack of 10, it is well suited to trade use and repeat installations.

MacDonald Plumbing Supplies MacOverflow Equal Tee 21.5mm Black PACK OF 10

The MacOverflow Equal Tee 21.5mm Black is designed for creating neat, reliable branch connections within overflow waste systems. Manufactured to suit standard 21.5mm overflow pipe, these equal tees allow a straight-through run with a balanced branch, making them ideal for linking multiple appliance overflows into a single waste line. Finished in black for a clean, discreet appearance, they are well suited to both domestic and commercial plumbing installations. Supplied in a convenient pack of 10, they offer excellent value for installers and maintenance teams carrying out multiple jobs.

MacDonald Plumbing Supplies MacOverflow 90 Deg Knuckle Bend 21.5mm Black PACK OF 10

The MacOverflow 90 Deg Knuckle Bend 21.5mm Black is a versatile and durable fitting designed to create a smooth 90 degree change of direction in 21.5mm overflow pipework. Its compact knuckle bend shape allows for tighter turns than a standard swept bend, making it ideal for installations where space is restricted. Manufactured from strong, reliable plastic, it provides a secure and leak free connection that supports efficient flow in overflow systems. The modern black finish offers a discreet and tidy appearance, particularly suited to exposed or visible pipe runs in both domestic and commercial environments.

MacDonald Plumbing Supplies MacOverflow 90 Deg Knuckle Bend 21.5mm White PACK OF 10

The MacOverflow 90 Deg Knuckle Bend 21.5mm White is designed to provide a neat and reliable 90 degree directional change within 21.5mm overflow pipework. Its compact knuckle bend shape allows for tighter, more efficient turns than a traditional swept bend, making it ideal for installations where space is limited. Manufactured from durable white plastic, it gives a clean and discreet finish that blends seamlessly with surrounding sanitaryware. Perfect for both domestic and commercial overflow systems, this fitting ensures a secure, leak free connection that supports smooth water flow.

MacDonald Plumbing Supplies MacOverflow 45 Deg Obtuse Bend 21.5mm Black PACK OF 10

The MacOverflow 45 Deg Obtuse Bend 21.5mm Black is a reliable and versatile fitting designed to create a smooth 45 degree change of direction in 21.5mm overflow pipework. Its obtuse angle promotes efficient water flow while reducing the risk of turbulence or restriction. Made from robust black plastic, it is ideal for installations where a discreet, low visibility fitting is preferred. Suitable for domestic and commercial overflow systems, this bend delivers a secure, leak free connection and ensures long term performance.

MacDonald Plumbing Supplies MacOverflow 45 Deg Obtuse Bend 21.5mm White PACK OF 10

The MacOverflow 45 Deg Obtuse Bend 21.5mm White is a dependable fitting designed to create a smooth 45 degree diversion in 21.5mm overflow pipework. Its obtuse angle supports efficient water flow while minimising turbulence and resistance. Manufactured from durable white plastic, it provides a clean and tidy appearance, making it ideal for visible internal installations. Whether used in domestic or commercial systems, this bend ensures a secure, leak free and long lasting connection for a wide range of overflow applications.

MacDonald Plumbing Supplies MacOverflow Straight Connector 21.5mm White PACK OF 10

The MacOverflow Straight Connector 21.5mm White is a dependable, easy to install fitting designed to create a secure, leak free join between 21.5mm overflow pipes. Ideal for basins, cisterns, cold water tanks and general overflow systems, it provides a strong and stable connection that ensures excess water is diverted safely. The clean white finish blends seamlessly with standard plumbing pipework, offering a neat and professional appearance. Suitable for both new installations and repair work, this connector is a simple yet essential component for maintaining effective overflow management in domestic and commercial settings.

MacDonald Plumbing Supplies MacOverflow Straight Connector 21.5mm Black PACK OF 10

The MacOverflow Straight Connector 21.5mm Black is a reliable and easy to install component designed for creating secure, watertight joins between 21.5mm overflow pipes. Manufactured for durability, it provides a strong connection that helps prevent leaks in basin, cistern and tank overflow systems. Its slim, tidy design ensures a neat finish, while the black colour offers a modern alternative to traditional white fittings, making it ideal for exposed pipework. Suitable for domestic and commercial plumbing, it is an essential fitting for ensuring safe and effective overflow management.

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.