Booster Pump, Phase Three, Pump Housing Material Cast Iron, Motor Enclosure Open Dripproof, Horsepower 1 hp, Nameplate Voltage 208-230/460V AC, Flow Rate @ 10 psi 50 gpm, Flow Rate @ 20 psi 43 gpm, Flow Rate @ 30 psi 35.5 gpm, Flow Rate @ 40 psi 27 gpm, Flow Rate @ 50 psi 15 gpm, Shut Off Pressure (Maximum) 59 psi, Compatible Intake Pipe Size 1 1/4 in, Compatible Discharge Pipe Size 1 in, Intake Type NPT, Mounting Orientation Horizontal, For Use With Potable Systems No, Amps 3.7-3.2/1.6 A WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)