The revolutionary air operated double diaphragm plastic pumps were specifically designed for maximum performance and efficiency in a wide variety of applications. When choosing a plastic pump on a metal pump, chemical compatibility and weight come into play. Some pumping applications require a lightweight mobile pump available in multiple locations. On the other hand, when chemical compatibility is critical, plastic pumps provide an ideal option against highly corrosive products. Maximum flow: 878 LPM. Maximum suction aspiration: 9.8 m primed, 6.6 m dry. Maximum pressure: 8.6 BAR. Maximum solids pitch: 12.7 mm. Sizes from 6 mm (1/4 ") to 76 mm (3 '').