... .Our products include globe valves,check valves,safety valves,ball valves,butterfly valves,diaphragm valves,mud valve ect.And ... Sealing Face304LSTLSTL316STLSTL316LSTLSTL Feature:1.Cast and weld two structures with the body.2.The seat ring uses the folating ... no pressure loss,and the pipeline can be cleaned with hair-ball through it.7.Automatic removal of tne high prssure ...