... SS 2.Disc: (DI, CI, SS) PTFE Coated 3.Stem: SS 4.Seat: PTFE PTFE Lined Butterfly Valve1.Body: CI DI WCB ... Disc: (DI, CI, SS) PTFE Coated3.Stem: SS4.Seat: PTFEOur PTFE lined butterfly valve adopting the PTFE butterfly board to sealed spherical ... , rofluoric acid, phosphoric acid,chlorine, strong alkaline, aquaregia, etc.Type of connection: counter connection, flange connection.Actuator: Hand Lever, Worm ...