... water,steam,acid,etc. Q71F Flange Wafer type Ball Valve (1) Specifications : Model no.:Q71FPressure: ... in manufacturing and exporting valves.Certificates:Quality is controlled strictly to ISO9001, API ... with Customers Product range:Valves:gate valve,check valve,globe valve,ball valve,butterfly valve,control valve,safety valve,angle valve,Titanium alloy valve, thermostatic valve, needle valve, plug valve ...