| CLASS 150~1500 SWING CHECK VALVE Bolted cover,swing type discThreaded or welded seat ringASTM A216 WCB,A217 WC6,A351CF8,A351CF8M,A351 CF3,A351 CF3M,A351 CN7M Standards compliance Design and Manufacture: ANSIB16.34,API6D,BS11868Face to face(end to end): ANSIB16.10,API6DFlanged connection: 2~~24~to ANSIB16.5~~~~~~~~~~22~,26~~36~to MSS-SP-44~~~~~~~~~~to API605 on requestButt welded end: ANSIB16.25Test and inspection: API598,API6D | 
