Product Item: API 6D Double Disc Wafer Check Valve
Type: Wafer Check Valve
Standard: API 6D
Size: 2 Inch, DN50
Pressure: Class 900 LB, PN150
Materials:
Body: Carbon Steel ASTM A216 WCB
Disc (Trim): Stainless Steel ASTM A351 CF8M
Ends: Wafer
Painting: Grey Color


Source: https://www.landeevalve.com/dual-plate-wafer-check-valves-api-6d-wcb-2-inch-900-lb.html