Air-Operated Double Diaphragm Pump 1/2' Inlet 7GPM Pneumatic Nitrile QBY4-15 High-Quality Diaphragm Pump Air-Operate Double Diaphragm Conveying Materials Sealed Ball Valve All-Bolted Construction Wide Application Suction: 0-5 m (0-16.4 ft),Outlet Port: 1/2 inch (12.7 mm),Body Material: Polypropylene,Inlet Port: 1/2 inch (12.7 mm),Max Suspended Solids: 2.38 mm (3/32 inch),Diaphragm Material: Nitrile,Air Inlet Size: 1/4 inch (6.35 mm),Check Seat Material: Polypropylene,Gas Nozzle: 0.32 inch (8 mm),Max Flow Rate: 2 m3/h (7 GPM),Max Head: 69 m (226.4 ft)