Booster Pump Phase Three Pump Housing Material Cast Iron Motor Enclosure Open Dripproof Horsepower 1/2 hp Nameplate Voltage 208-230/460V AC Flow Rate @ 10 psi 10 gpm Flow Rate @ 20 psi 9.5 gpm Flow Rate @ 30 psi 9 gpm Flow Rate @ 40 psi 8.3 gpm Flow Rate @ 50 psi 7.6 gpm Flow Rate @ 60 psi 7.1 gpm Flow Rate @ 70 psi 6.5 gpm Flow Rate @ 80 psi 6 gpm Flow Rate @ 90 psi 5.5 gpm Flow Rate @ 100 psi 4.5 gpm Flow Rate @ 120 psi 2.3 gpm Shut Off Pressure (Maximum) 132 psi