Booster Pump Phase Single Pump Housing Material Cast Iron Motor Enclosure Open Dripproof Horsepower 3 hp Nameplate Voltage 208-230V AC Flow Rate @ 10 psi 39 gpm Flow Rate @ 20 psi 38 gpm Flow Rate @ 30 psi 37 gpm Flow Rate @ 40 psi 36.5 gpm Flow Rate @ 50 psi 36.5 gpm Flow Rate @ 60 psi 35 gpm Flow Rate @ 70 psi 34 gpm Flow Rate @ 80 psi 32.5 gpm Flow Rate @ 90 psi 31 gpm Flow Rate @ 100 psi 30 gpm Flow Rate @ 120 psi 27 gpm Shut Off Pressure (Maximum) 75 psi