The Red Lion RL12G05-2W2V 1/2 HP, 2-wire, 230-volt submersible deep well pump, delivers a maximum of 12 GPM and a maximum shut- off of 212 ft. See specification sheet for performance details. This pump has a stainless steel pump casing, thermoplastic discharge and motor bracket and comes with a built-in suction screen and check valve. This 2-wire, 230 volt motor does not require a control box. From the Manufacturer This submersible deep well pump is ideal for 4-Inch I.D. or larger wells. It features a built in check valve, 12-GPM and built in suction screen.