Submersible Borehole Pumps are a class of Submersible Pumps used to pump water from a borehole to the surface.

A Borehole is a narrow shaft drilled vertically into the ground which has dimensions that are slightly larger than the borehole pump that is lowered into the borehole. Submersible Borehole Pumps, which are also known as Borehole Pumps, Well Pumps or Borehole Water Pumps, extract water from the Borehole.

They are typically designed to fit in narrow holes called boreholes which are drilled to extract water from water tables or aquifers deep below ground. Due to the depths in which boreholes are drilled, the holes are typically narrow with the pumps sold according to borehole size as well as capacity and pressure. (Also read Seven Factors To Consider To Select the Right Borehole Pump in Zimbabwe)

How Submersible Borehole Pumps Work

Borehole pumps are typically longer than standard pumps of equivalent capacities as they are extended to make up for the narrow space in which they may be installed. Borehole motors are typically filled with water or oil (non-toxic) cooled for bearing lubrication with sealing via a mechanical seal. The cable leaves the motor via a cable gland.

The cable is manufactured according to the depth of the borehole. As cables lengthen there is an associated voltage drop, meaning once cables reach set lengths, the cable diameter must be increased in order to deliver sufficient power to the motor.

Also, while the pumps themselves are not versatile, the selection certainly is. Some submersible pumps can easily handle solids, while some are better for liquids only. Submersible pumps are quiet because they are underwater, and cavitation is never an issue because there is no “spike” in pressure as the water flows through the pump.

How Submersible Borehole Pumps Work

At Nakiso Borehole Drilling, we have a great selection of Submersible Pumps, and other pumps as well. We will be happy to recommend the right pump for your needs. We work with the world's best Submersible Borehole Pumps offers to give you pumping solutions for the extraction of water from your Borehole.

We also have a wide range of Submersible Borehole Pumps to meet the needs of any type of system, up to industrial.

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Five Facts About Borehole Drilling That You Need To Take Note Of:
1. Know Your Borehole Casings:The Preferred Borehole Casing In Zimbabwe Is Class 9 and 10 (Pressure Classes.)This is because Class 9 and Class 10 Casings are more collapse resistant. The strength of a Casing is often described as collapse resistance.

2. Borehole Drilling Depth: The exact depth, of where the water is located, cannot be established by the drilling contractor nor the Water Surveyor (Borehole Siter).

3. The Is No 100% Guarantee On Water: It is important to note that it is never a 100% guarantee that any hole will yield water, the amount and water quality can also not be guaranteed by the drilling contractor and water surveyor.

4. Borehole Siting or Water Surveying Is Important: Making use of a hydrologist or traditional water diviner will increase your chances of having a successful borehole that will yield a sufficient amount of water.

5. Know The Risks: The risk of the borehole drilling lies with the property owner. The client will still be liable for the drilling costs irrespective of a borehole yielding water or not.

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