Yamada NDP-20BPE 852383, Air Operated Double Diaphragm Pump with EPDM Diaphragm.
EPDM Valve & EPDM Valve & O-Rings, Polypropylene (PPG) Material, 31.Pump, 852383, Air Operated Double Diaphragm Pump with EPDM Diaphragm..7 GPM Max Flow, 3/4" Female NPT Fluid Port, 3/8" Female NPT (includes ball valve) Air Inlet, 3/4" Female NPT (includes silencer) Air Exhaust, Polypropylene Air Motor & 18 Feet Max Suction Lift.