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Submersible Pumps Frequently Asked Questions

Submersible pumps are designed to run submerged in water. The sealed motor prevents water from getting inside and causing a short circuit. The water is pushed to the surface via an impeller that is driven by the motor converting rotary energy into kinetic energy and then into pressure energy.

How does a submersible pump work
Submersible pumps are safe from electrical shorts as water is prevented from leaking into the unit by a hermetically sealed watertight gasket. However, while using a submersible pump it is still recommended to keep an eye on children and pets to ensure they are kept at a safe distance to prevent any harm.

Submersible pumps are used to lift water from deep bore wells below the ground level. To ensure for correct selection, it is important to consider the below criteria:

Bore size: Bore wells are drilled in various diameters. Diameter size is an important factor in selecting the right size pump.
Head range: Head range is actually a liquid pressure at a particular point. It is equal to the height of the discharge outlet of the pipe and the liquid pressure at the discharge point.
Discharge: Discharge is the required water at the outlet which is 80% of the total yield of a bore well submersible pump.
Motor power: Choosing the right power motor is essential for the best performance (maximum efficiency) of a bore well pump.
Number of stages: The number of stages are selected based on the depth of a bore well to have maximum efficiency at duty point.

Electric submersible pumps are multistage centrifugal pumps that operate in a vertical position. The electrical submersible pump, typically called an ESP, is an efficient and reliable artificial-lift method for lifting moderate to high volumes of fluids from bore wells.

These are electric submersible pumps used for draining sewage, wastewater, septic tanks, infiltration and rainwater. They can be used in household and residential, industrial and agricultural environments.

These are submersible pumps used for pumping and disposing of sewage containing suspended solids, pumping of raw unscreened sewage and effluent, storm water, sand with water as well as raw and waste water containing large solid objects.

Submersible pumps are found in many applications. Single stage pumps are used for drainage, sewage pumping, general industrial pumping and slurry pumping. They are also popular with pond filters. Multiple stage submersible pumps are typically lowered down a borehole and used for residential, commercial, municipal and industrial water extraction (abstraction), water wells and in oil wells. Other uses for submersible pumps include sewage treatment plants, seawater handling, firefighting, water well and deep well drilling, offshore drilling rigs, artificial lifts, mine dewatering and irrigation systems.

Yes, submersible pumps have check valves. Check valves permit water flow in only one direction, and are required on all submersible pumps. Some submersible pumps have built-in check valves, and are suitable for operation without an external check valve provided the pump setting is not too deep.

No, priming is not required for submersible pumps. The major advantage to a submersible pump over other options is that it never has to be primed, because it is already submerged in the fluid.

A submersible pump is a centrifugal pump, which is attached to an electric motor and operates while submerged in water. The sealed electric motor spins a series of impellers and each impeller in the series forces water through a diffuser into the eye of the one above it.

Submersible pumps are used for drainage, sewage pumping, general industrial pumping, slurry pumping, pond filters, residential, commercial, municipal, industrial water extraction, water wells, in oil wells, sewage treatment plants, seawater handling, firefighting, water well and deep well drilling, offshore drilling rigs, artificial lifts, mine dewatering and irrigation systems.

Yes, single stage open well submersible pumps are installed horizontally. Bore well submersible pumps however are installed vertically.

No. If the pump is run dry then its moving parts will become extremely hot, causing severe damage to the pump over time and greatly limiting its service life.  For this reason, the float switches should be arranged so that the fill level in the shaft does not fall below the minimum level required to operate the pump.

There are a variety of factors that could cause your submersible pump to run continuously. But regardless of the reason, a submersible pump that runs without stop will burn out more quickly than a submersible pump that runs intermittently.

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