The Everbilt 3/4 HP rugged cast iron convertible jet pump has superior performance at depths to water to 70 ft. or less. Self-priming after pump housing is initially filled, the unit is supplied with a pre-installed 30-50 pressure switch for automatic operation and a pressure gauge to monitor pressure. The unit is supplied with both the shallow well and deep well ejectors. The unit comes with the shallow well jet ejector installed on the pump for applications with depths to water 25 ft or less (one pipe system). For deep well applications, remove the shallow well ejector from the front of the pump and replace the nozzle and venturi with the deep well venturi and nozzle supplied for deep well applications. For deep well installations with water depths over 25 ft. to 70 ft., the ejector is installed in the well using 1 in. and 1-1/4 in. piping (two-pipe system).