... Duplex etc. Other Materials available upon Request Features: .Manufacture in Forged and Casting Materials: WCB, A105, SS304, SS316 & Duplex etc ... (Resilient and Metal) Materials available To Suit Different Service Condtions.Pressure Rating: CL150, CL300, CL600, CL900, CL1500, CL2500.Available ... & Test: API 6D / API598 .Valve Marking: MSS- SP-25.To MR-01-75 On Request Forged steel top entry trunnion ball ...