Booster Pump, Phase Three, Pump Housing Material Cast Iron, Motor Enclosure Open Dripproof, Horsepower 1 hp, Nameplate Voltage 208-230/460V AC, Flow Rate @ 20 psi 59 gpm, Flow Rate @ 30 psi 44 gpm, Flow Rate @ 40 psi 21 gpm, Shut Off Pressure (Maximum) 42 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 4.3-4/2 A, Best Efficiency Pressure 29 psi WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)