Automatic Demand Water System Pump, Max. Pressure - Pumps 35 psi, Housing Material - Pumps Polypropylene, Diaphragm Material - Pumps Santoprene (R), Max. Flow 1.0 gpm, Voltage - Pumps 12V DC, Power Type Electric, Diaphragm, Inlet/Outlet 3/8 in HB, Check Valve Viton, Flow 1 gpm, Fuse Amps 5 A, Pressure On 25 psi, Pressure Off 35 psi, Prime in Feet 3, Self-Priming Yes, Standards IAPMO and CSA Listed, Includes 3/8 in Inner Diameter Hose, Two Piston