Product Name: Flexible Wedge Gate Valves
Type: Flexible Wedge Gate Valve
Standard: API 600
Nominal Size: 20 Inch (DN500 / 508 mm)
Pressure: Class 150 LB, PN20
Body Material: ASTM A216 WCB
Trim: Trim No. 8
End Connection: RF Flanged
Surface Treatment: Epoxy Coating

Source: https://www.landeevalve.com/api-600-wedge-gate-valve-a216-wcb-trim-8-20-in-150-lb.html