Lift Type / Piston Type Check ValveMAIN FEATURES:The valve is opened/closed by the valve disc moving in a direction parallel to the valve seat hole axis and can only be installed on horizontal pipelines with the major function of preventing medium backflow when shutting down the pump and maintaining the water column required by pumping.Main Parameter SpecificationDesign and Manufacture:Cast Steel Check Valve to BS 1868,ASME B16.34,API 6DInspection and Test:API598,API600 or API 6DEnd Flange Dimension:ASME B16.5(for NPS≤24,ASME B 16.47 series B,API 605,ASME B16.47 A Series,MSS SP-44(for NPS＞24)BW end Dimension:ASME B16.25Face to Face and End to End:ASME B16.10Pressure-temperature ratings:ASME B16.34Wall Thickness Dimension:API 600,BS 1868Product RangeBody material: carbon steel, stainless steel, alloy steel,bronzeNominal diameter:1/2"~48"(DN15~DN1200)End Connection: RF,RTJ, BWPressure range: Class150~2500(PN16~PN1200)Working temperature:-196℃~+560℃