Product Name: ASTM A351 CF8M Gate Valves
Type: Gate Valve
Standard: API 600
Body Material: ASTM A351 CF8M
Trim Material: 12#
Seat Facing Material: ASTM A182 F316 + ST.6
Size: 4 Inch, DN100, 100 mm
Pressure: Class 150 LB, PN20
End Connection: RF Flanged
Operation: Handwheel

Source: https://www.landee.cn/astm-a351-cf8m-gate-valves-trim-12-api-600-4-inch-cl150.html