Swing cast steel check valve describe: Size: NPS 2"-56" Pressure: Class 150-1500 Material:WCB,LCB,WC6,WC9,C12,C5,CF8,CF3,CF3M,CF8M ,etc. Applicable standards: .STEEL CHECK VALVES,BS1868/API6D .STEEL CHECK VALVES,ISO 14313 .STEEL VALVES,ASME B16.34 .FACE TO FACE,ASME B 16.10 .END FLANGES,ASME B 16.5 .BUTTWELDING ENDS,ASME B16.25 .INSPECTION AND TEST,API 598/API 6D
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