... safety valves,ball valves,butterfly valves,diaphragm valves,mud valve ect.And it has complete inspection equipment, such ... /T79.1~79.25.Pressure test of general valve: GB/T139276.Valve inspection and test: JB/T90927.Drivign manner: ... steel,Intensified polytetrafiuoroethylene(PEFE)PS:Product parameters can be customer ordered, the above parameters for reference only. Nominal PressureStrength testWater ...