APO FPV 15mm Solar Anti Frost Protection Valve Chrome Plated 5") and features an aluminum

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

Designed to allow for easy removal of pump for service or replacement

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

• Ring Size Range: 125 – 230mm (5 – 9")

Model: PTR20/1400

APO FPV 15mm Solar Anti Frost Protection Valve Chrome Plated 5") and features an aluminumOverview 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