MacDonald Plumbing Supplies MacAntifreeze Valve 28mm V2

The MacAntifreeze Valve 28mm V2 is a highly effective solution for protecting heat source pump systems from freezing temperatures. Automatically activating when the temperature drops to 3°C, this valve opens the flow and return circuit to prevent ice formation, safeguarding the system from potential damage. With no need for glycol or ongoing maintenance, it offers a cost-effective and low-maintenance solution to ensure smooth operation in cold weather.

MacDonald Plumbing Supplies MacFill & Flush Valve 28mm

The MacFill & Flush Valve 28mm is a versatile valve with a brass body and a diverting 'T' port ball valve. It includes two isolating ball valves, blank caps, and union hose connectors, making it ideal for filling and flushing heating systems with cleaning chemicals or water treatments.

MacDonald Plumbing Supplies MacFill & Flush Valve 22mm

The MacFill & Flush Valve 22mm is a versatile valve with a brass body and a diverting 'T' port ball valve. It includes two isolating ball valves, blank caps, and union hose connectors, making it ideal for filling and flushing heating systems with cleaning chemicals or water treatments.