Booster Pump, Phase Single, Pump Housing Material Cast Iron, Motor Enclosure Totally Enclosed Fan Cooled, Horsepower 3 hp, Nameplate Voltage 230V AC, Flow Rate @ 10 psi 54 gpm, Flow Rate @ 20 psi 51 gpm, Flow Rate @ 30 psi 48 gpm, Flow Rate @ 40 psi 45 gpm, Flow Rate @ 50 psi 41.5 gpm, Flow Rate @ 60 psi 38 gpm, Flow Rate @ 70 psi 34 gpm, Flow Rate @ 80 psi 29 gpm, Flow Rate @ 90 psi 23 gpm, Flow Rate @ 100 psi 17 gpm, Shut Off Pressure (Maximum) 121 psi, Compatible Intake Pipe Size 1 1/4 in WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)