... .Our products include globe valves,check valves,safety valves,ball valves,butterfly valves,diaphragm valves,mud valve ect.And ... .Pipe flange and flange fitting: ANSI B16.5a4.Integral casting steel pipe flange: JB/T79.1~79.25.Pressure ... loss,and the pipeline can be cleaned with hair-ball through it.7.Automatic removal of tne high prssure ... suitable for the requirement of 24hour duty. API Casting Gate Valve