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

Source: https://www.landee.cn/api-6d-wafer-check-valve-a216-wcb-2-in-cl900-double-disc.html