SWING CHECK VALVESTUCTURE TYPE: BOLTED COVER,SWING TYPE DISC,THREADED OR WELDED SEAT RING.STANDARDSBASIC DESIGN:ASME B16.34 AND API 6DFACE-TO-FACE DIMENSIONS:ASME B16.10END FLANGE DIMENSIONS: ASME B16.5A (NPS1/2~24)TEST:API 598MATERIAL:WCB,CF8M,CF3M,WC6,WC9,C5,C12A,LCC,LCB,PRESSURE RATING:150Lb-----2500Lb