304/316 stainless steel Thread Check Valve 1.Investment casting technology 2.CNC lathe processed ... series: 1pc,2pc,3pc ball valve,flanged end ball valve,gate valve,check valve,globe valve,Y-strainer,sanitary valve etc.3.Quick coupling: type ... A,TypeB, typeC, typeD, typeE, typeF, typeDC, typeDP4.Malleable iron ...