In high volume groundwater pumping applications, the pump is almost always located underground. Even so, the type of pump and the method of driving it can be very different. The two most common pumping systems for high volume groundwater applications are vertical line shaft turbines (VLSTs) and submersible turbines.
VLSTs use an aboveground motor with a drive shaft connecting the motor to the submerged pump. These pumps are suitable for some applications, primarily in shallow sets.
Submersible turbines use a submersible motor coupled to the submerged pump so that both are located together in the well. In most applications, a submersible makes more sense. Some of the main reasons follow. Continue reading