Booster Pump, Phase Single, Pump Housing Material Cast Iron, Motor Enclosure Open Dripproof, Horsepower 1/2 hp, Nameplate Voltage 115/230V AC, Flow Rate @ 20 psi 40 gpm, Flow Rate @ 30 psi 0 gpm, Shut Off Pressure (Maximum) 30 psi, Compatible Intake Pipe Size 1 1/2 in, Compatible Discharge Pipe Size 1 1/4 in, Intake Type NPT, Mounting Orientation Horizontal, For Use With Potable Systems No, Amps 7.8/3.9 A, Best Efficiency Pressure 22 psi, Case Pressure (Maximum) 100 psi WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)