Wafer Butterfly Valve Cast Iron body, Stainless stem and disc. Designed body to suit most international flanges including AS2129, BS10, ANSI, DIN and JIS standards. The wafer style is designed for inline service and relies on a flange either side of the valve to secure it in the pipeline. Standard seal is NBR, EPDM seals also available on request. Can also be ordered with Single and Double acting actuators on request.