What is a submersible pump and what is it used for?

A Brief Introduction to Submersible Pumps

Submersible pumps, are designed to operate fully immersed in the liquid they are pumping. They are commonly used in situations involving flooding, such as rising groundwater in basements, flooded boats, or waterlogged areas.

These pumps come in a variety of models, mainly differentiated by the type of water they are intended to handle. Clean-water submersible pumps are suitable for rainwater or similar applications, while dirty-water or wastewater pumps can handle water containing sand, soil, or debris. Heavy-duty models are capable of processing larger solid particles. An impeller at the bottom of the pump helps break down solids, allowing them to be drained efficiently.

Submersible pumps may come with or without a float switch. A float switch is useful for automatic operation, allowing the pump to turn on or off as needed. For applications requiring the area to be fully drained, manual operation may be necessary to prevent the pump from running dry. Some models offer both manual and automatic modes, providing flexibility depending on the situation.

What Is a Submersible Pump Used For?

Submersible pumps are designed for a variety of water removal tasks. They can be used to lower groundwater levels, pump water for drinking or firefighting purposes, handle dirty water, or drain wastewater.

In residential settings, these pumps are ideal for draining swimming pools to adjust water levels or refill with clean water. They are also effective for removing water from flooded basements or cellars caused by leaks or heavy rainfall.

What Type of Submersible Pump Should I Choose?

Submersible pumps come in various types, each designed to handle specific liquids and applications. The choice of pump depends on factors such as the type of water, the volume to be drained, and the conditions of the space.

For example, if a space needs to be completely drained, a puddle pump is ideal, as it can remove water down to very low levels. In areas with limited space, pumps with built-in float switches allow automatic operation while maintaining a compact size suitable for sump pits.

Specialized models are also available for handling more challenging liquids, such as wastewater containing solids or caustic substances. These pumps are built with protective features to prevent damage to the motor and seals, ensuring reliable performance in demanding environments such as farms or industrial settings.

Buying a Submersible Pump: Four Key Tips

If you are considering purchasing a submersible slurry pump, these four tips can help you choose a model that delivers the best performance and value:

Tip 1: Check Pump Capacity
Pump capacities vary widely, from around 7,500 litres per hour to 18,000 litres per hour or more. Determine the volume of water you need to move and select a pump with a capacity that meets your requirements.

Tip 2: Check the Delivery Head
The delivery head indicates the maximum height a pump can lift water. Some pumps can reach up to eight metres, while others are limited to five metres. Choose a pump that matches the height requirements of your application.

Tip 3: Consider Automatic Operation
Some pumps feature a float switch for automatic on/off operation. While convenient, automatic mode may not fully drain a surface, which can only be achieved manually. Be sure you understand how and when to switch off the pump to avoid running it dry.

Tip 4: Review Included Accessories
Accessories can make a pump easier to handle and install. Check which accessories are included, such as hoses, connectors, or carrying handles, to ensure the pump suits your needs.

By keeping these factors in mind, you can select the submersible pump that is most suitable for your specific application.