... SS Aluminum bronze 4.Stem: SS (One Piece with Pin) 5.Seat: NBR EPDM Double Flange Butterfly Valve (Center Line) 1.Size ... : CI DI WCB SS Aluminum bronze4.Stem: SS (One Piece with Pin)5.Seat: NBR EPDM VITON PTFE6.Working Pressure: PN107 ... .Suitable for control of water, seawater, sewage, oil, air, vapor, food, medicine, acids, alkalis, salts, paper making etc. Double Flange Butterfly Valve ...