Air-Operated Double Diaphragm Pump 1/2' Inlet Outlet Cast iron 12GPM QBK-15-1/2 High-Quality Diaphragm Pump PTFE 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: Cast iron,Inlet Port: 1/2 inch (12.7 mm),Gross Weight: 6.5 kg (14.33 lbs),Color: Blue,Air Inlet Size: 1/4 inch (6.35 mm),Max PSI: 115 psi,Gas Nozzle: 0.32 inch (8 mm),Max Flow Rate: 2 m3/h (12 GPM),Max Head: 69 m (226.4 ft)