On-Demand General Purpose Diaphragm Pump, Max. Pressure - Pumps 45 psi, Housing Material - Pumps Polypropylene, Diaphragm Material - Pumps Santoprene (R), Max. Flow 3.5 gpm, Voltage - Pumps 120V AC, Power Type Electric, Quad Chamber Diaphragm, Inlet/Outlet 1/2 in HB, Check Valve Viton, Flow 3.5 gpm, Fuse Amps 1.5 A, Pressure On 30 psi, Pressure Off 45 psi, Prime in Feet 8, Self-Priming Yes, Standards -, Includes -