Booster Pump, Phase Single, Pump Housing Material Cast Iron, Motor Enclosure Open Dripproof, Horsepower 2 hp, Nameplate Voltage 115/230V AC, Flow Rate @ 20 psi 34 gpm, Flow Rate @ 30 psi 32.5 gpm, Flow Rate @ 40 psi 31.5 gpm, Flow Rate @ 50 psi 31 gpm, Flow Rate @ 60 psi 29.5 gpm, Flow Rate @ 70 psi 27.5 gpm, Flow Rate @ 80 psi 27.1 gpm, Flow Rate @ 90 psi 25 gpm, Flow Rate @ 100 psi 24.2 gpm, Flow Rate @ 120 psi 20.3 gpm, Shut Off Pressure (Maximum) 147 psi, Compatible Intake Pipe Size 1 in