PRODUCTS Check Valve
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FDM Series Diaphragm check Valves

FDM Series diaphragm check valves are widely used in VRVs, commercial air conditioners, heat pump hot water heaters, and commercial refrigeration. They are used to control the unidirectional flow of refrigerant so as to prevent backflow.

FDH Series Piston Type Check Valve

FDH series piston type check valves are widely used in VRVs and commercial air conditioners, heat pump hot water heaters and commercial refrigeration. The piston type check valves are preferred at exhaust air tube because of better high temperature resistance performance, They are used to control the unidirectional flow of refrigerant so as to prevent backflow.