VALVE,CHECK:SWING;4”;CLASS 150;RF FLG;ASTM A216 GR WCB BODY;GR WCB DISC WITH CR13 FACE,CS + STELLITE FACE SEAT RING,OTHER WETTED PARTS 316 SS;REINFORCED GRAPHITE GASKET;API 6D,NACE;QA/QC REQ A,C,D,E;MFG: SCV,FIG. FCK0401B1011R (OR APPROVED EQUIVALENT)