Booster Pump, Phase Single, Pump Housing Material Cast Iron, Motor Enclosure Open Dripproof, Horsepower 1 1/2 hp, Nameplate Voltage 115/230V AC, Flow Rate @ 10 psi 52 gpm, Flow Rate @ 20 psi 48 gpm, Flow Rate @ 30 psi 43 gpm, Flow Rate @ 40 psi 38 gpm, Flow Rate @ 50 psi 31 gpm, Flow Rate @ 60 psi 23 gpm, Flow Rate @ 70 psi 13 gpm, Flow Rate @ 80 psi 1.9 gpm, Shut Off Pressure (Maximum) 81 psi, Compatible Intake Pipe Size 1 1/4 in, Compatible Discharge Pipe Size 1 in, Intake Type NPT WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)