Submersible Pumps

What are submersible pumps?

Submersible water pumps are devices used for pumping water from various sources like wells, reservoirs, and pools. They operate underwater, making them ideal for high-humidity environments or complete immersion.

The casing of submersible pumps is fully or partially submerged in water. This is necessary due to their operating principle, as the water drawn in passes through the motor compartment, cooling it before being pressurized and pumped.
To prevent dry running, which would inevitably damage the motor, modern submersible pumps are equipped with a water level sensor. This sensor may be an external automatic float or an electromagnetic type built directly into the pump casing. Its function is to shut off the pump when the water reaches a certain minimum level, and turn it back on when the water level is restored.

Features of submersible pumps that make them ideal for certain applications:

• High Efficiency - Submersible pumps are highly efficient due to their ability to work in a submerged environment, which reduces friction and wear on pump components.

• Self-priming - submersible pumps are self-priming, meaning they can start pumping without the need for manual priming.
• Durable and Long-lasting - Submersible pumps are designed to be sturdy and durable, with a lifespan that can last decades.
• Versatile - submersible pumps come in a wide range of sizes and configurations, making them suitable for various applications.
• Easy to Install and Maintain - Submersible pumps are relatively easy to install and maintain, thanks to their compact design and autonomous operation.

How to choose the right submersible pumps?

The model of the submersible pump should be chosen based on the type of application, pumping depth, distance to which the water needs to be transported, consumption, and duration of operation. These conditions define specific technical characteristics to consider when choosing, namely:

• Application: Determine what you will use the pump for - clean water, dirty water, or a well.

• Pumping Depth: This usually corresponds to the pressure provided by the submersible pump and cannot exceed it. Choose a pump capable of drawing water from the required depth.

• Flow Rate: Ensure the pump can provide the necessary water flow rate, representing the amount of water that can be delivered to the final pumping point. The flow rate is directly related to power, with most common models providing between 5000-6000 l/h.

• Power  - Power indicates the force with which water is pushed and whether it will cover the distance it needs to be transported. Power is calculated based on the pressure and flow rate that the submersible pump must provide.

• Pressure - represents the height at which the pump can push the drawn water. More powerful submersible pumps provide higher pressure, making them suitable for use in deeper wells, boreholes, or reservoirs.We can distinguish models with low pressure up to 5-6 m for irrigation applications, medium pressure up to 8-15 m for household water supply, and those with high pressure over 15 m, suitable for drawing water from very deep boreholes.

• Power Supply Type - This can be single-phase or three-phase and should match the parameters of the main electrical network that will power it. When choosing a submersible pump with mains power, it’s essential to check the length of the cable it comes with. Most models are supplied with a cable up to 10 m, which is usually sufficient.

Types of submersible pumps

There are several main types of submersible pumps suitable for different applications:

• Submersible Pumps for Clean Water

The water is clean when it lacks sand or other solid particles and is drawn from wells, boreholes, and stored in reservoirs or pools.

For use in boreholes or wells, the submersible pump is entirely underwater and typically supported by ropes to avoid contact with the bottom.
Depending on the depth of submersion, the pump may have single-, double-, or multi-stage suction turbines to provide the necessary pressure and flow rate.

They are ideal for use in pools, reservoirs, and other clean water bodies, for which portable models of submersible pumps that sit on a flat surface and draw water from below are suitable.
Their operation principle does not require them to be constantly submerged, and bottom suction from 1-4 mm above the floor makes them effective and useful for drying out and draining containers of various capacities.

• Submersible Pumps for Dirty Water

Water is considered murky, muddy, or polluted when it contains particles between 25-100 mm in size. Submersible pumps for dirty water are characterized by high output flow with relatively low pressure. This makes them an efficient solution for draining basements, sewer pits, flooded areas with wastewater.For pumping dirty water from drains, construction sites, and also contaminated reservoirs, standing portable submersible pumps with bottom suction are again used, but they are additionally equipped with a filtering system to capture solid particles and a special cutting wheel (vortex) for shredding debris.

• Submersible Pumps for Wells

Specifically designed for pumping water from deep wells.

Brands of Submersible water pumps we offer

• Baukraft

Baukraft offers high-quality submersible pumps known for their reliability and long service life. They are ideal for a wide range of applications inhome and garden.

• Green Tools

Green Tools is distinguished by innovative solutions and eco-friendly technologies. Their submersible pumps are designed to be energy-efficient and wear-resistant.

• Metabo

Metabo is known for producing professional tools and equipment. Their submersible pumps feature high power and durability, making them suitable for intensive use.

• Raider Garden Tools

Raider Garden Tools offers a variety of submersible pumps, combining affordability with high quality. They are suitable for garden and household needs.

• Raider Pro

Raider Pro is a brand geared towards professional users. Their submersible pumps are designed for high performance and reliability in tough conditions.

• Top Garden

Top Garden is known for its range of garden tools and equipment. The brand’s submersible pumps are ideal for use in gardens and small farms.

Frequently asked questions (FAQs)

1. What is the difference between a submersible and surface water pump?
   Submersible pumps operate underwater, while surface pumps are located outside the water source and draw water in.

2. How do I choose the right submersible pump for my well?
   Choose a pump based on the depth of the well and the required water flow rate.

3. Can submersible pumps be used for pumping dirty water?
   Yes, but you must select a model specifically designed for dirty water.

4. How often should a submersible pump be maintained?
   Maintenance should be done regularly, at least once a year or as per the manufacturer's instructions.

5. What is the typical lifespan of a submersible pump?
   The lifespan depends on the quality of the pump and operating conditions, but generally ranges from 5 to 10 years.

6. How do I install a submersible water pump?
   Follow the manufacturer’s instructions and ensure all electrical connections are properly insulated.

7. What are the advantages of submersible pumps over surface pumps?
   Submersible pumps are quieter, more efficient, and can pump water from greater depths.

8. Can I use a submersible pump for garden irrigation?
   Yes, submersible pumps are ideal for garden irrigation and other agricultural needs.

9. How do I protect my submersible pump from freezing in winter?
   Remove the pump from the water source and store it in a dry and warm place during winter months.

10. How do I know if a submersible pump is suitable for my water source?
    Check the pump specifications to ensure they meet your needs and conditions.