Yamada Pumps DP-15FPH Type, Model 853721 DP-15 Series, Air Operated Double Diaphragm Pump, Hytrel Diaphragm, PTFE / Buna-N Flat Check Valve / O-Rings, Polypropylene – Flat Valve (PPG) Material, 7.4 GPM Max Flow, 1/2″ NPT Fluid Port, 1/4″ Female NPT (includes ball valve) Air Inlet, 3/8″ Female NPT (includes silencer) Air Exhaust, Aluminum Air Motor, 10 Feet Max Suction Lift