Booster Pump, Phase Single, Pump Housing Material Cast Iron, Motor Enclosure Open Dripproof, Horsepower 3 hp, Nameplate Voltage 230V AC, Flow Rate @ 20 psi 34.5 gpm, Flow Rate @ 30 psi 37.5 gpm, Flow Rate @ 40 psi 33 gpm, Flow Rate @ 50 psi 32.5 gpm, Flow Rate @ 60 psi 31.5 gpm, Flow Rate @ 70 psi 32.5 gpm, Flow Rate @ 80 psi 29.8 gpm, Flow Rate @ 90 psi 28 gpm, Flow Rate @ 100 psi 27.9 gpm, Flow Rate @ 120 psi 25.6 gpm, Shut Off Pressure (Maximum) 187 psi, Compatible Intake Pipe Size 1 in