... :PTFE Certificate:CE,API,ISO9001 Trunnion ball valve is the class-1 supplier for CNPC,CAO,CNOOC,Sinopec - Type:Welded trunnion ball ... DN50-800mm, 2’’-32’’Pressure rating range PN1.6-10MPa Class 150-1500Suitable temperature-196-550°CDesign reference GB,API,ASME ...