Pump, Model 851952 NDP-15 Series, Air Operated Double Diaphragm Pump, Hytrel Diaphragm,
5 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, Ryton Air Motor, 5 Feet Max Suction Lift.Yamada Pumps NDP-15BAH Type, Model 851952 NDP-15 Series, Air Operated Double Diaphragm Pump, Hytrel Diaphragm, Hytrel / Buna-N Flat Check Valve / O-Rings, Aluminum Ball Valve (ADC-12) Material, 13.