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.

Inta Zero Anti Freeze Valve 1" Male x 1" Female Swivel ZERO1SW

The Inta Zero Anti-Freeze Valve 1" Male x 1" Female Swivel ZERO1SW is designed to protect heat pump systems operating with water. It automatically discharges when the water temperature falls to 3°C, preventing ice formation that could lead to system breakdowns or costly damage.

Inta Zero Anti Freeze Valve 1¼ Male x 1¼ Female Swivel ZERO14SW

The Inta Zero Anti-Freeze Valve 1¼ Male x 1¼ Female Swivel ZERO14SW is specifically designed to safeguard heat pump systems operating with water. This unique valve discharges automatically when the water temperature falls to 3°C, preventing ice formation that could lead to system breakdowns or costly damage.