1.Body: CI DI WCB SS 2.Disc: (DI, CI, SS) PTFE Coated 3.Stem: SS 4.Seat: PTFE PTFE Lined Butterfly Valve1.Body: CI DI WCB SS2.Disc: (DI, CI, SS) PTFE Coated3.Stem: SS4.Seat: PTFEOur PTFE lined butterfly valve adopting the PTFE butterfly board to sealed spherical surface, being equipped with silicon rubberCushion in the seat is flexible, perfect on sealing performance,and long span life, it can be ...