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• Thread Size Physical Measurements: 26
The AVG ECV15-1200-LF 15mm (1/2") 1200kPa ECV expansion control valve is used to regulate the water pressure inside hot water services
5") and features an aluminum base that can be shaped to fit various roof profiles
• Ring Size Range: 125 – 230mm (5 – 9")
APO FPV 15mm Solar Anti Frost Protection Valve Chrome Plated • Thread Size Physical Measurements:Overview 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
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