On-Demand General Purpose Diaphragm Pump Max Pressure - Pumps 60 psi Housing Material - Pumps Polypropylene Diaphragm Material - Pumps EPDM Max Flow 2 gpm Voltage - Pumps 120V AC Power Type Electric Duplex Chamber Diaphragm Inlet/Outlet 3/8 in FNPT Check Valve Santoprene Flow 2 gpm Pressure On 40 psi Pressure Off 60 psi Prime in Feet 8 Self-Priming Yes Standards - Includes -