... ISO9001 ,API, AZ,CE Materials:PTFE,Rubber Trunnion ball valve as the class-1 supplier for CPMEC,CNPC - Type ... :Cast steel trunnion ball valve- Processing: Long delivery pipes of natural gas- Method: Handle operation ,Worm gear operation,Pneumatic and hydraulic, ... API,ASME Face to face Flange connection/Welded connection Ball valve ModelQ47FCertificateDNV ISO9001:2000, CE ,API,LRQA,TSSuitable medium ...