Check Valve, Swing, TE, 3” 150# RF, FP, Sour, WCB/SS, Viton GLT 90, BCCheck Valve, 3 150# RF, FP, Swing, Sour Service, WCB SS, Viton GLT 90, Bolted Cover Size: 3 Inch Valve Type: API 6D Swing Check Valve Port: Full Port Pressure Class: ASME Class 150 Body and Cover Material: Carbon Steel A216 WCB (A105) Clapper Material: Stainless Steel ASTM A351 CF8M Seal Material: Viton 90 End Connection: Raised Face Flange (RF) Service: Sour SPECIAL NOTES: PIGGABLE VALVE