Useful Information You Need To Know About Submersible Pumps

Posted by Xylem on April 22nd, 2021

A submersible water pump in New Zealand, like any other pump, moves liquids from one point to another. Unlike other types of pumps, submersible pumps are fully submerged in the liquid they are required to pump. The pumps can be used in different pumping applications. However, before choosing these pumps, it is important to remember that they have their advantages and disadvantages.

A submersible pump works with the entire pump assembly fully submerged in the medium or liquid to be pumped. This pump has a motor that is hermetically sealed. The pump has a watertight enclosure around the motor that is usually filled with oil to prevent damage by preventing any liquid from entering which can cause a short circuit.

Submersible pumps operate by pushing liquid, as opposed to drawing. This is very efficient because the pump uses the liquid’s head in which it is submerged to function and no energy is required in the drawing of the liquid. The motor of the pump is cooled by the liquid it is submerged in and this prevents overheating. A lot of submersible pumps in the gas and oil industry function according to the ESP principle. The Electric submersible pumping principle is a cost-effective way of lifting large volumes of liquids from deep wells. When it comes to an ESP system, the motors used are designed to function under high pressures and temperatures. They require special electric cables and can be costly to run.

Advantages:

Priming

Once you get a submersible pump from a submersible water pump supplier in NZ, your pump will not require priming. Submersible pumps are self-priming pumps because they are installed below the surface of the fluid.

Cavitation

These pumps are fully submerged in the fluid they are pumping and this means that the pumps aren’t prone to cavitation. Cavitation can be a problem with other types of PD pumps and centrifugal pumps.

Efficiency

When using a submersible pump, you are guaranteed efficiency. The pump has the head pressure of the fluid on the suction end and this helps it operate. The pump doesn’t need to use a lot of energy in drawing fluid into the pump and this makes it more efficient compared to other types.

Noise

Since the pump is submerged in the fluid, it makes less noise compared to pumps that are installed above the fluid.

Disadvantages:

Accessibility

When using a submersible pump, it will not be easy to access it for routine maintenance and inspection, especially when it is used for deep well applications. It is, therefore, more difficult to perform preventative maintenance compared to other pumps and in many applications, submersible pumps are left to pump until they break down.

Corrosion

When a submersible water pump in NZ is exposed to a liquid for a long period, it will begin to corrode. The pumps are often used to pump liquids that are abrasive and corrosive. Seals are prone to corrosion and this can lead to damage to the motor and leaks. Corrosion can be counteracted by purchasing pumps made of corrosion-resistant materials.