flange butterfly valve 1.DN50-1400;PN1.0/1.6MPa 2.Medium:Water,Oil,Gas,etc 3.T:-10-120 4.Body Material:Cast Iron Flanged end Butterfly Valve 1.Type: Wafer and flange2.Nominal Pressure: PN1.0/1.6MPa 3.materials: 3-1.body: cast iron 3-2.Disc : ductile iron with Ni plated 3-3.Seat: EDPM 3-4.Shaft/Stem: SS416 with pin 3-5.Handle: 3-5-1.Hand lever for DN40-DN200:Malleable Iron 3-5-2.Worm gear for ...