... WCB SS 2.Disc: (DI, CI, SS) PTFE Coated 3.Stem: SS 4.Seat: PTFE PTFE Lined Butterfly Valve1.Body: CI DI WCB SS2 ... ,chlorine, strong alkaline, aquaregia, etc.Type of connection: counter connection, flange connection.Actuator: Hand Lever, Worm Gear, Electric, Pneumatic PTFE Lined Butterfly Valve