... CE,ISO,API, ABS Structure:butterfly valve Cast iron rubber lined wafer type butterfly valvesize: 2''- ... 48'';pressure: 150lb;4. self cleaning function Cast iron rubber lined wafer type butterfly valve feature: ... ---Body : Cast Iron , Ductile Iron , Bronze / Aluminum Iron, SS304Disc: Cast Iron , Ductile Iron , Bronze , SS304Seat: EPDM , PTFE , NBR , VITONShaft: Carbon Steel , Stainless SteelCoating ...