electric radiator valves SpecificationsSS-8505 Size:3/8",1/2" Material: Brass body and plastic handle Threaded ISO228/1. electric radiator valvesStructure: Brass Body, brass bonnet, brass ball, brass stem Seal ring P.T.F.E, O-ring N.B.R, steel handle with plastic cover, brass screw cap, PVC cushion, iron inside dentation cushion Size:3/8",1/2"Testing pressure: 0.6-0.8mpa TEM:0