General description This Air-Operated Double Diaphragm Pump, model QBY4-15, delivers a flow rate of 7 GPM with 1/2-inch inlet and outlet connections, making it an essential tool for various industrial applications. Engineered for efficiency and durability, this pump features an externally serviceable air distribution system and robust, all-bolted construction. It is easy to operate and ideal for use in industries such as petroleum, metallurgy, mining, coatings, printing, paper production, water treatment, and automotive sectors. Technical specifications Max Flow Rate: 33.2 L/min (8.8 GPM) Model: QBY4-15 Body Material: Polypropylene Inlet Port: 12.7 mm (1/2 inch) Outlet Port: 12.7 mm (1/2 inch) Max Head: 69 m (226.4 ft) Suction: 0-5 m (0-16.4 ft) Air Inlet Size: 6.35 mm (1/4 inch) Gas Nozzle: 8 mm (0.32 inch) Max Suspended Solids: 2.38 mm (3/32 inch) Diaphragm Material: PTFE Check Seat Material: Polypropylene Usage Capable of transferring various fluids, including viscous and flammable