Swing Check Valve, Class 150, Flanged Ends, Face to face acc. to ASME B 16.10, Connections acc. to ASME B 16.5, 16.25, Design acc. to API 600, ASME B 16.34, P-T Rating acc. to ASME B 16.34, Available Sizes (2" - 12"). Materials: Body: A216 Gr WCB, Disc: A182 Gr F6aA (for sizes 2" to 6"), A216 Gr WCB/13%/Cr Face (for sizes 8" to 12")