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 Specification
Design and Manufacture：Cast Steel Check Valve to BS 1868,ASME B16.34,API 6D
Inspection and Test：API598,API600 or API 6D
End 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 B16.25
Face to Face and End to End：ASME B16.10
Pressure-temperature ratings：ASME B16.34
Wall Thickness Dimension：API 600,BS 1868
Body material: carbon steel, stainless steel, alloy steel,bronze
End Connection: RF,RTJ, BW
Pressure range: Class150~2500(PN16~PN420)