304/316 stainless steel Thread Check Valve 1.Investment casting technology 2.CNC lathe processed 3.SS304 ... Material: 304/3165) Applicable medium: nitric, acetic acid, water, oil, gas and some corrosive liquids 1.Investment casting technology2.CNC lathe ... .valves 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 ...