The BFK series has a cast iron body, 304 S.S disc, EPDM seat and a double acting pneumatic actuator making them suited to a wide range of general water applications. These wafer butterfly valves will fit all standard flanges. Common applications include water trucks, irrigation and non corrosive industrial applications. If using on a cement hopper please contact us. We recommend going up a size in actuator to compensate for the weight on the disc. For more information visit www.valvesonline.com.au/cast-...