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 MacValve Water Drain Valve with Hose Tail ½" BSP

The MacValve Water Drain Valve is a durable and reliable solution for draining water from boilers and manifolds. Featuring a ½" BSP hose tail connection, a secure lever valve, and a closing cap with ring nut, this valve ensures efficient water drainage while preventing leaks.

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 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.

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.