4 in submersible deep well pump. Powered by a 3-wire, 230 V industry standard VMC motor. Built-in check valve prevents backflow and ensures system pressure. Built-in suction screen and 1-1/4 in NPT thermoplastic discharge head helps to prevent debris from clogging impellers and provides full flow performance without the risk of corrosion. 1/2, 3/4 and 1 hp models come with a control box.