Sprinkler Pump, Phase Three, Pump Housing Material Cast Iron, Horsepower 1/2 hp, Nameplate Voltage 208-240/480V AC, Suction Lift (Maximum) 25 ft, Flow Rate @ 10 psi 37 gpm, Flow Rate @ 20 psi 28 gpm, Maximum Feet of Head 64 ft, Shut Off Pressure (Maximum) 37 psi, Compatible Intake Pipe Size 1 1/2 in, Compatible Discharge Pipe Size 1 1/2 in, Intake Type NPT, Motor Enclosure Totally Enclosed Fan Cooled, Flow Rate @ 30 psi 19, Priming Self-Priming, Best Efficiency Flow 33 gpm