APO FPV 15mm Solar Anti Frost Protection Valve Chrome Plated Valve Type: Non Return Check

Valve Type: Non Return Check Valve

PTR valve will fully open and dump hundreds of liters of water to relieve the water heater tanks

20mm Gas isolation ball valve (20mm Loose nut x 20mm Female)

5") and features an aluminum base that can be shaped to fit various roof profiles

APO FPV 15mm Solar Anti Frost Protection Valve Chrome Plated Valve Type: Non Return CheckOverview The APO Anti Frost Protection Valve FPV is designed to protect solar collector panels from frost damages. The APO FPV is compatible and a direct swap for other brands such as AVG and Caleffi frost protection valves. The FPV anti frost valve employs a wax filled piston inside coupled with a spring to open or shut the valve. The wax will contract or expand according to the ambient air temperature in order to move the piston. To extend the APO