Product Item: ASTM A182 F316L Wafer Check Valve, OEM Mfg
Standard: API 594
Body Material: ASTM A182 F316L
Disc Material: ASTM A351 CF8M
Size: 3 Inch
Pressure: Class 150 LB
Surface Treatment: Silver Painting
Source: https://www.landee.cn/astm-a182-f316l-wafer-check-valve-api-594-3-inch-cl150-lb.html