Choosing the right pump- which is the right one for me?

A pump is a mechanical device that transports water by transforming the energy supplied by a motor into hydraulic energy and pushing it upwards!

Simple isn’t it!!!!

But, choosing a right one is not !

The first criterion for choosing a pump is the type of media concerned. The technical characteristics of the site must be taken into account because they will determine the choice of pump. Even though Ellen pumps are one of the best in the market today still you must be clear about your needs before buying one as Ellen pumps have many. Pumps come in different size and shapes depending on the area of installation and different pumps are used for different needs. So be clear what is it that you really need.

The conditions of the site, the amount of water required and the height at which it is required will determine the need of the pump and properly calculate the machine size and the operating point of the pump.

This will give you an overview of the main types of pumps and the typical situations in which they are used.

In order to choose a pump that meets your needs, you must determine its characteristics according to its use.

 1. First of all, you must determine if the pump is to be installed in an open well, tank or in a borehole. It is also good to check the salt content in the water that will be transferred in order to avoid corrosion phenomena and therefore premature wear of your pump as already discussed. It is therefore essential to know the presence of solid components or salt content in your water to choose the ideal technology for your application and the construction materials compatible with the pumped media. 

 2. Then, you should check the characteristics related to transporting the media, in particular:

 • The flow you require: generally measured in cubic meters per hour or  GPM (gallons per minute), the flow necessarily influences the size and dimensions of your pump; 

 • The suction head (height between the inlet of the suction pipe and the pump): as a general rule, the suction head must not exceed 10 meters. Beyond this, it is necessary to consider using a submersible pump.

 • The discharge head (height between the pump and the discharge pipe outlet).

 • The length of the discharge circuit, which means how long will be the pipe before the water is discharged .

 • Head losses linked to obstacles on the pumping circuit (valves, bends, etc.).

 • Whether there is a discharge tank or not could change the head.

 • The temperature thus depends on the choice of the particular Ellen pump casing and the temperature of the liquid travelling in it !

These different values allow you to calculate the NPSHa (Net Positive Suction Head available) of the setup. This will allow you to choose a suitable pump and avoid any risk of cavitation. You will also have to control the efficiency; which must be optimal at 30% more or less than the desired nominal flow rate.

What are the different types of pumps?

There are different types of pumps, in the market and Ellen pumps are one of the best namely:

 1. Centrifugal pumps (the fluid is sucked in by a paddle wheel or propeller); are the most common model. Centrifugal pumps are robust equipment that generally offer good efficiency.

 2. Submersible pumps directly suck the fluid into the pump so it is not limited by the suction height, usually used in bore wells etc .

You can also consider this type of pump for supplying a wastewater treatment plant, or transporting thick fluids or cleaning fluids, such as in the petrochemical industry.

Hence, for any type of need of pumps that you might have select the best pump in the industry and be sure it fulfills all your requirements. Don’t just go on advertisements or word of mouth publicity.

For further enquiry in Ellen pumps and pump set, contact us at

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