3-Wire 4 in. submersible well pumps are the most economical, energy-efficient pumps for 4 in. wells or larger. This pump will deliver the optimum amount of water and pressure for general house or farm use. The submersible well pumps install down into wells with 4 in. inside diameter casings or larger. This extremely efficient design is capable of lifting water 300 ft. in deep well applications. Durable and proven components extend pump life. This pump is manufactured with a corrosion-resistant stainless steel pump and motor housing. The patented floating stack is designed for sand resistance and reduced sand locking. It is also supplied with a heavy-duty discharge connection. The pump is supplied with a built-in check valve. 3-Wire (plus ground) control box required for pump operation.