Water pumps can be classified into different categories according to use, power source, design, and mode of operation. Here, we will narrow down to the different types of water pumps in terms of mode of operation.

Water pumps come in handy in a number of settings, from construction, irrigation, residential, and industrial purposes. The two main categories of water pumps are centrifugal and positive displacement pumps. While the purpose of the pumps may be the same, they differ in mode of operation. Other categories include the dynamic and rotary displacement pumps. The main factors worth considering when choosing a water pump include the flow rate, budget, water requirements, the power source, and the durability of the pump.

This article gives a comprehensive review on the different types of water pumps used, as well as how you can decide on the right one to choose.

What is a water pump?

Basically, a water pump is a device that is responsible for increasing water pressure to facilitate transfer of the water, or other liquid, from one point to another. These depend on different power sources—diesel, gas, solar energy, or electricity—for operation. Regardless of the type, they all follow one scientific principle, the motor converts rotational or kinetic energy into hydrodynamic energy that causes the water to flow.

What are the different types of water pumps ?

As mentioned above, there is a wide variety of water pumps that can be used for water extraction. Below are some of the main ones.

1. Centrifugal pumps
The centrifugal pump employs a rotating impeller to move the water within and then adds pressure to the discharge flow. Centrifugal pumps can be further categorized into submersible
and standard models. They are best suited for thin liquids, and this often encompasses all kinds of liquids. This makes them very common and applicable in a number of settings, especially agricultural purposes.

2. Positive displacement pumps
The positive displacement pumps are designed to deliver a fixed amount of water through the mechanism of mechanical expansion and contraction of a flexible diaphragm. These pumps are known to be very efficient. However, one notable drawback is that they require a very small clearance between outer edge of the unit and the rotating pump. This means that the rotation is likely to be done at a slower speed. In the event that higher speeds are required, the liquid erodes and this will ultimately reduce the overall efficiency of the pump.

3. Rotary displacement pumps
These pumps come complete with hollow disk pumps, gear pumps, screw pumps, vibratory pumps, and rotary vane pumps. All these are fairly efficient. Moreover, they are capable of handling highly viscous fluids which are synonymous with higher flow rates.

What type of water pump do I need?

Given the fact that there are different types of pumps, choosing one may feel like a daunting task. There are several factors worth considering that will help you make the right decision.

Water requirements

You will first need to determine your water requirements before settling on a particular water pump. For agricultural purposes, for instance, consider the size of the irrigation area and the water that will be required to sufficiently irrigate the crops. This will help you figure out a suitable pumping capacity and flow rate of the pump.

Power source

Another important factor is the power source. You are required to assess the availability of the different power sources: fuel, electricity, or sunlight in the area. If you reside in an area of the grid, solar-powered options would be the best choice. Diesel powered pumps are also a great alternative in areas where electricity is not easily accessibility.

Flow rate

The flow rate refers to the amount of water the pump can deliver in a given duration. Higher flow rate translates to more water in a given time frame. For irrigation needs, the flow rate comes in handy depending on the size of farm to be irrigated as well as the crop water demand of the plants.

Durability

It is advisable to invest in a durable water pump that will offer long-term performance before any repairs or replacements are due. They should be made of materials of high-quality to be able to withstand the harsh conditions they are subjected to. It is recommended to choose from some of the reputable brands in the market.

Budget

The price of the pump is a great determinant. Whenever you are setting the budget, it is important to think of the cost effectiveness of the pump purchase. It is important to invest in a good quality pump and evaluate any other likely expenses such as maintenance and energy consumption.

Conclusion

This article has explored the different water pumps you are likely to find in Kenya and also available at Bluewater LTD. There are different options to suit different needs. Hopefully, this article has helped shed some light on the same, making it easier to choose between different water pumps.