Swing Type Check ValveMAIN FEATURES:The valve is opened or closed by the valve disc to rotate around the spindle outside the valve seat;and it is an automatic valve when it is automatically opened or closed by the force generated by the medium flowing within the pipeline.Its major function is to prevent the backflow of the medium in the pipeline,reverse rotation of the pump and its driving motor, and discharge of the medium in the container. 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~PN420)Working temperature:-196℃~+560℃