Swing check valve 

Sizes diameter:Dn50-Dn1250
Operating temperature: -196ºC~593ºC(the range of service temperature may vary for different materials)
Operating pressure:150-2500 CLASS
Material    Main material: A216 WCB,WCC;A217 WC6,WC9,C5,C12,C12A,CA15;A351 CF8,CF8M,CF3,CF3M,CF8C,CN3MN,CK3MCUN,CN7M;A352 LCB,LCC;A494 CW-6MC,CU5MCuC,M35-1;A995 4A(CD3MN),5A(CE3MN),6A(CD3MWCuN);ASME B 148 C95800,C95500, etc.
Design standard:API 6D,API 594,BS 1868,ASME B16.34,GB 12236,GB 12224
Structural length: ASME B16.10
Connecting end: ASME B16.5,ASME B16.25,GB 9113,GB 12224
Test standard:API 598,ISO 5208,JB/T9092,GB/T13927