Booster Pump Phase Single Pump Housing Material Cast Iron Motor Enclosure Open Dripproof Horsepower 1/3 hp Nameplate Voltage 115/230V AC Flow Rate @ 20 psi 28 gpm Shut Off Pressure (Maximum) 27 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 7.5/3.4 A Best Efficiency Pressure 19 psi Case Pressure (Maximum) 100 psi Compatible with Media Type Water