An expert guide to submersible pumps for business owners and homeowners

Submersible pumps are specifically designed to be completely submerged within the fluid that is to be pumped. These pumps are used in a wide range of commercial and industrial applications as well as within schools and homes.

Understanding the anatomy of submersible water pumps

These pumps are usually fitted with waterproof cables that supply power to the motor of the pump. The system is typically constructed so that the turbine and motor bowl are attached. Submersible water pumps are those complete units that feature the mechanical and electrical controls and motor enclosed in a frame and cover. For these pumps to function effectively, they must have a significant fluid volume running through them at any given time.

The fluid helps to maintain the correct temperature and cool down the pump so that it doesn’t overheat. In some cases, this cannot occur as the submersible water pump may not be completely submerged in the water. In such instances, you should fit a shroud that has a closed top to assist in directing the water into the pump.

Submersible water pumps are used in a similar way to other turbine water pumps but changes to the way the motor of the pump is started are required. The pump requires additional protection from the overload. This helps protect the longevity of the pump and to ensure that the power is cut if the motor stalls and the impeller gets jammed. Without such a cut-off mechanism, the motor windings can be damaged.

Operating capacity

When you buy submersible pumps, you need to know that these pumps come in a wide range of sizes. The sizes are determined by the application. Smaller pump models can be used in light commercial settings and within homes and usually have a consumption of power between 75kw and 2.2kw. They accommodate solids of about 55mm in diameter. In construction, industrial and other heavy-duty applications, larger pumps can be purchased and these can handle solids up to about 65mm and waste.

The development of submersible water pumps

Submersible water pumps were first manufactured in Europe. The pumps were commonly seen in the 50s in the USA. During those days, some people doubted the reliability of these pumps believing that they would struggle to function when they are fully submerged. However, the first models to be created proved to be successful and the pumps became popular in the 60s. During this period, the pumps were fitted with guide rails to assist in removing the pump for routine maintenance and repair. As an increasing number of companies started to see the benefits of these pumps, their popularity continued to grow. The pumps are now a significant component within a lot of modern pumping stations.

Applications Submersible pumps can be used in a wide range of applications. They can be used in areas prone to flooding, deep wells, where traditional pump motors could get damaged, where there is limited space, settings where a quiet pump is required and in agricultural applications.

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