PUMP CATEGORY

Submersible Pumps

Submersible pumps are the most widely used type of water pump, designed to operate fully submerged in the liquid they are pumping. They are used across residential, commercial and industrial applications for water transfer, drainage, flo...

Products in range 44
From £59.99£49.99 (Exc VAT)
Type Submersible
Warranty Up to 3 Years
44 products
Flood Protection Solutions★ 5.0

EGO 500 SE LS Automatic Puddle Pump | Adjustable Electronic Sensors

  • The fully automatic EGO 500, draws water down to 1mm without manual intervention
  • Adjustable electronic sensors replace the mechanical float
  • Set start level anywhere from 125mm down to 15mm
  • Set stop level down to 3-5mm with run-on for 1mm pumping
  • Supplied with non-return valve
£309.00 £257.50 (Exc VAT)
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EVAK★ 4.88

EVAK Residox 400 Manual Puddle Pump

  • Ultra-low-level manual puddle pump, removes water to approximately 1 mm
  • 250 l/min flow, 11 m head, suited to domestic and light commercial flooding
  • Stainless steel build, cast iron housing, Hytrel impeller
  • Surface-safe rubberised base for finished floors
  • 110V or 230V, no priming required
£459.00 £382.50 (Exc VAT)
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Flood Protection Solutions★ 5.0

EGO 500 GI Submersible Puddle Pump | Dual Manual & Automatic

  • The original EGO 500 with 9mm solids handling for debris-laden water
  • Dual manual or automatic operation via float switch
  • Auto mode starts at 130mm, stops at 70mm
  • Manual mode pumps down to 10mm
  • 230v 3 Pin Domestic Plug
£215.00 £179.17 (Exc VAT)
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Submersible Pumps:

Submersible Pumps: Versatile Pumps for Water Removal and Transfer

Submersible pumps sit directly in the water, allowing them to push water out rather than draw it in. This makes them more efficient, easier to use, and more reliable than surface-mounted alternatives in most situations.

They are used across a wide range of applications, including site drainage and construction dewatering, flood water removal, water transfer between tanks or areas, wells and boreholes, wastewater and sewage pumping, and ponds and water features.

Different submersible pumps are designed for different duties, so selecting the correct type is critical.

Sizing tool

Water Pump Performance Calculator.

Indicative only This calculator uses a simplified parabolic pump curve and the Hazen-Williams friction loss formula. Real pump curves vary by model. Results are a guide only. Always verify against your pump's published performance data and consult our team if you are unsure.
How to use this calculator
  1. Enter your pump's max flow rate and max head from the datasheet or product listing. These are the peak figures at either end of the pump curve: max flow at zero head, max head at zero flow.
  2. Select your hose or pipe type. Suction and delivery hose is the most common for portable pumps. Layflat hose is used for longer water transfer runs. Rigid PVC pipe is for fixed installations.
  3. Choose the diameter to match your pump outlet or the hose you intend to use.
  4. Enter the total length of your hose or pipe run in metres from pump outlet to discharge point.
  5. For rigid pipe, add any 90 degree bends using the counter. Each bend adds resistance equivalent to extra pipe length.
  6. Read the results. The calculator estimates your duty point: the flow rate and head your pump will likely deliver through that hose run. For longest pump life, aim for a duty point in the mid-curve range (roughly 40 to 70% of max flow).
Step 1: Your pump specification

Labelled "max flow" or "free flow" on the datasheet: the flow at zero back pressure

Labelled "max head" or "total head": the maximum height the pump can push water at zero flow

Step 2: Your hose or pipe

Suction / delivery hose

PVC reinforced, helix coil, smooth bore: max 6 bar working pressure

Vertical rise from pump to outlet. Enter 0 if pumping on flat ground

Results
Friction loss per 10 m
–
m head / 10m
Total friction loss
–
metres head
Head remaining after friction
–
metres head
Estimated flow at duty point
–
L/min (indicative)
Buying guide

All about submersible pumps.

The deeper read: types, how they work, performance, how to choose, flood use, key benefits, brands we stock, and UK delivery.

Types of Submersible Pumps

Submersible pumps are not a single product type. The term covers a family of pumps that all sit in the water but are built for very different jobs. Choosing the right one starts with the categories below, each of which has its own dedicated collection.

Puddle Pumps. A submersible designed to pump down to as little as 1mm without overheating, for clearing shallow surface water from floors, basements and flat areas. The most popular choice for flood clean-up.

Sump Pumps. A submersible installed in a sump (a collection pit or chamber) so it can switch on automatically and remove water as it gathers. A sump pump describes where the pump sits and how it is used, not a different type of machine.

Sewage and Dirty Water Pumps. Built with vortex, cutter or grinder designs to pass solids and foul water that would block a clean-water pump. Used for below-ground bathrooms, foul drainage and wastewater transfer.

Dewatering and Site Drainage Pumps. Heavy-duty contractor submersibles for trenches, excavations and construction sites, built for continuous duty in dirty, silty water.

High Flow Pumps use larger impellers to move big volumes quickly for flooding over large areas, while High Head Pumps stack impellers to push water higher or further under pressure.

Well and Borehole Pumps. Slim, high-head submersibles that lift water from depth for private supply, irrigation and rainwater harvesting.

If the pump must sit out of the water instead, see surface pumps. For a permanent, ready-to-install kit that combines a chamber and pump, see packaged pump stations.

To choose a pump by job rather than by type, see our drainage pumps guide.

How Submersible Pumps Work

A submersible pump consists of a sealed electric motor connected to an impeller within a watertight housing.

When powered, the motor spins the impeller, creating a pressure difference:

  • Low pressure at the inlet draws water into the pump
  • High pressure at the outlet pushes water away

Because the pump is already submerged, it does not need to prime and can begin pumping immediately.

Understanding Performance: Flow Rate and Head

Submersible pumps are rated based on two key performance factors:

  • Flow Rate (L/min or m³/hr): how much water the pump can move
  • Head Height (m): how high or far the pump can push water

These are linked. As head increases, flow rate decreases.

To size a pump correctly, both must be considered together using a performance curve.

Choosing the Right Submersible Pump

When selecting a submersible pump, consider:

What are you pumping? Clean water, dirty water, sewage or chemicals all require different pump designs.

How much water needs to be moved? Flow rate determines how quickly you can clear an area.

How far does the water need to go? Both vertical height and horizontal distance affect performance.

What power supply is available?

  • 110V (site use)
  • 230V (standard supply)
  • 3-phase (industrial/high performance)

Manual or automatic operation?

  • Manual pumps require switching on/off
  • Automatic pumps use float switches to activate when water rises

Submersible Pumps for Flood Use

Submersible pumps are one of the most effective tools for flood response. They are quick to deploy, reliable, and capable of moving large volumes of water.

They can also be installed permanently as part of a flood resilience system, where automatic pumps activate when water levels rise.

Key Benefits of Submersible Pumps

  • Operate directly in water (no priming required)
  • Quick to deploy and easy to use
  • Reliable in flood and drainage conditions
  • Wide range of types for different applications
  • Suitable for both temporary and permanent setups

Stocked Submersible Pumps from Leading Brands

We supply submersible pumps from trusted manufacturers including Tsurumi Pumps, APP Pumps, Stream Pumps and EVAK Pumps.

All pumps are selected based on real-world use in flood and drainage projects, with stock held in the UK for fast dispatch.

Large UK Stock, Ready for Dispatch

We hold significant stock of submersible pumps in our UK warehouse, with next-day delivery available to most areas.

If you are unsure which pump is right, we can help you narrow down the options based on your application.

Common questions

Submersible pump questions answered.

How does a submersible pump work?

A submersible pump sits directly in the water and pushes water out rather than drawing it in. A sealed electric motor drives an impeller inside a watertight housing: low pressure at the inlet draws water in and high pressure at the outlet pushes it away. Because the pump is already submerged it does not need priming, so it begins moving water immediately, which makes it more efficient and reliable than a surface-mounted pump in most situations.

What types of submersible pump are available?

Submersible pumps vary by application, liquid type and performance. Puddle pumps clear shallow surface water down to about 1mm. Sump pumps sit in a chamber and switch on automatically. Sewage and dirty water pumps handle solids and foul water, while dewatering pumps are built for site drainage and construction. High flow pumps move large volumes quickly and high head pumps push water over greater distances or heights. Choosing the correct type for your duty is critical.

How do I choose the right submersible pump?

Consider what you are pumping, as clean water, dirty water, sewage and chemicals each need a different design. Then work out how much water you need to move (the flow rate) and how far it must travel, both vertically and horizontally. Check the power supply available, 110V for site use, 230V for standard supply or 3-phase for industrial duties, and decide between manual operation or an automatic pump that uses a float switch to start as water rises. Use the performance calculator on this page to size flow and head, or call 0115 987 0358 for help.

What do flow rate and head mean?

Flow rate, measured in litres per minute or m³/hr, is how much water the pump can move. Head height, measured in metres, is how high or far it can push that water. The two are linked: as head increases, the flow rate decreases, so a pump should be sized using both together on its performance curve. The calculator on this page helps you work out the head for your installation.

Can a submersible pump be used for flooding?

Yes. Submersible pumps are one of the most effective tools for flood response, being quick to deploy, reliable and able to move large volumes of water. They can also be installed permanently as part of a flood resilience system, with automatic pumps that activate when water levels rise. To remove the last shallow water after flooding, see our Puddle Pumps; for permanent below-ground installations, see Packaged Pump Stations.