... ,316L) 2.Standard: 3A , DIN, ISO,SMS 3.Stainless steel Butterfly valve 1.Type:Stainless steel Butterfly valve 2.Material :stainless steel (304,304L,316,316L), Gasket material:silicon rubber ,EPDM ... and designer of stainless steel products: Fittings: tee ,elbow/bend,cross,reducer ,union,ferrule adaptor,caps,clamp ...... Valves:butterfly valve,ball valve,check valve ...... Pumps:centrifugal pump ...