Booster Pump Phase Three Pump Housing Material Cast Iron Motor Enclosure Open Dripproof Horsepower 1 1/2 hp Nameplate Voltage 230/460V AC Flow Rate @ 10 psi 19.5 gpm Flow Rate @ 20 psi 19.4 gpm Flow Rate @ 30 psi 19.2 gpm Flow Rate @ 40 psi 18.6 gpm Flow Rate @ 50 psi 18.2 gpm Flow Rate @ 60 psi 17.8 gpm Flow Rate @ 70 psi 17.2 gpm Flow Rate @ 80 psi 16.8 gpm Flow Rate @ 90 psi 16.2 gpm Flow Rate @ 100 psi 15.5 gpm Flow Rate @ 120 psi 14.5 gpm Shut Off Pressure (Maximum) 75 psi