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 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 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 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.

Hotun White 15 - 22 Dry Trap Tundish HW100C15-22

The revolutionary, market-leading, plumber-designed hotun dry trap tundish allows a compliant connection from any sealed system T/PRV to an internal waste or soil pipe. Allowing both trickle and full flow but preventing foul odours and gases from coming back into a property, hotun eliminates the need for an external discharge. Due to it's innovative and patented "air-break to drain" design, hotun is the ONLY dry trap tundish on the market that can be cleaned and serviced (if required) in situ. There is no need to remove or dismantle Hotun from the pipeline which makes it ideal for use in hard water areas. Award-winning and cost effective, Hotun  is the original and industry pioneering one-product solution. It saves the installer time and money and is the ONLY dry trap tundish officially named and accepted for use by many of the worlds biggest water heater and boiler manufacturers. Hotun is the ONLY dry trap tundish on the market that has a visible open-sided construction and valve arrangement and allows water to be easily seen IN the tundish, even AFTER the T/PRV has stopped dripping. This means that diagnoses of any faults is quick and simple. Hotun is WRAS approved and fully complies with all Building and Water Regulation requirements and provides the ultimate back-flow & back-siphonage protection preventing contamination of any wholesome water and meets the "Requirement" for a safe and visible means of discharge.

15mm Gas Pressure Test Point

The 15mm Gas Pressure Test Point is a dependable fitting designed to provide convenient access for pressure testing gas systems. Suitable for use with soldered, compression and crimp fittings, it offers flexibility across a range of installation methods. Its design allows gas engineers to carry out pressure testing efficiently during installation, maintenance and fault finding. The test point can be used in the branch or either end of a standard tee, providing installation flexibility while potentially reducing fitting costs. It also means engineers only need to carry one specialist test point, helping save time and simplify work on site.

Regin Pressure Test Kit Complete REGU80

REGU80 - Pressure Test Kit Complete  

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.