1.Swing Check Valve 2.Adjustable check valve 3.High quality and competitive price Cast Iron Swing Check Valve, a kind of adjustable check valve. FeatureThis product features swing type, small flow resistance and elastic valve seat.ParameterOperating pressure: 16bar Test pressure: 24barSealing test pressure: 17.6barOperating temperature: -10°C~120°CMedium: Water/oil/airMaterialValve body: ductile ...