Built-in shallow well jet has corrosion-resistant nozzle, venturi and check valve. Close-grained cast iron pump body and base. Built-in check valve to prevent accidental loss of prime. Dust-proof cover to protect all electrical components from dust and insects. Motor features stainless steel shaft, heavy-duty ball bearings, balanced rotor and insulated motor windings. Pre-set, pre-wired pressure switch for automatic operation when used with water system tank. Top or side discharge-simplifies installation. 1-1/4" NPT suction and 3/4" NPT discharge. Dual voltage 115/230V; factory set at 230V. Wiring diagrams are permanently affixed on each motor for easy field change to 115 volt. Pressure switch setting 30-50. U.L. Listed. SEE SUB-SECTION G9 FOR PUMP PERFORMANCE CHARTS.