Submersible well pumps are hung or suspended in a water well on a pipe, sometimes to depths past 1000’. The motors of submersible pumps are encased in oil-filled compartments that do not have contact with the water they are pumping. Because they operate below the surface of the water, they are self-priming. The most common submersible well pumps are 2”, 3”, 4”, 6”, 8” and 10” electric submersible, bladder pumps (air driven), borehole pump and line shaft turbines.
This type of pump is useful for deeper wells and with constant pressure applications. Submersible well pumps are more efficient than jet pumps in delivering more water for the same size motor.