Booster Pump Phase Single Pump Housing Material Cast Iron Motor Enclosure Open Dripproof Horsepower 1/2 hp Nameplate Voltage 115/230V AC Flow Rate @ 20 psi 40 gpm Flow Rate @ 30 psi 0 gpm Shut Off Pressure (Maximum) 30 psi Compatible Intake Pipe Size 1 1/2 in Compatible Discharge Pipe Size 1 1/4 in Intake Type NPT Mounting Orientation Horizontal For Use With Potable Systems No Amps 7.8/3.9 A Best Efficiency Pressure 22 psi Case Pressure (Maximum) 100 psi