Product Name: Y-Type Piston Check Valve
Type: Y-Type Piston Check Valve, Pressure Seal
Size: 12 Inch * 16 Inch, DN300*DN400
Pressure Rating: Class 900 LB, PN150
Body Material: ASTM A351 CF8C
Bonnet Material: ASTM A182 F321
Disc Material: ASTM A182 F321 + STL
Gasket Material: SS 304 + GRP
End Connection: Flanged
Source: https://www.landee.cn/y-type-piston-check-valve-astm-a351-cf8c-12-16-in-cl900.html