Material:PTFE Certificate:CE,API,ISO9001 Trunnion ball valve is the class-1 supplier for CNPC,CAO,CNOOC,Sinopec - Type:Welded trunnion ball valve- Processing: Long delivery pipes of natural gas- Method: Handle operation ,Worm gear operation,Pneumatic and hydraulic, Electric- Raw Material: PTFE &Stainless steel Product Information Nominal size DN50-800mm, 2’’-32’’Pressure rating range PN1.6-10MPa ...