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Cobalt filterpump

Cobalt 400 Filterpumps

Cobalt filterpumps are industrial low to medium pressure submersible pumps with integral self-cleaning suction intake screens. These robust filterpumps offer high volume pumping and screening - up to 75 m3 / hr, 330 US GPM.

  • Maximum Output - 75 m3 / hr, 330 US GPM
  • Maximum Head - 19 m, 62 ft

Price from: £8,470

Cobalt 600 Filterpump

Cobalt 600 Filterpumps

Cobalt filterpumps are industrial low to medium pressure submersible pumps with integral self-cleaning suction intake screens. These robust filterpumps offer high volume pumping and screening - up to 108 m3 / hr, 475 US GPM.

  • Maximum Output - 108 m3 / hr, 475 US GPM
  • Maximum Head - 30 m, 98 ft

Price from: £15,175

Jade Filterpump 300


Jade filterpumps are 60 Hz medium – high head, multistage submersible pumps in chrome-nickel stainless steel with a stainless steel integral self-cleaning suction intake. They have a maximum output of 92 US GPM, maximum head of 160 ft.

  • Maximum output - 92 US GPM, 350 l / min
  • Maximum head - 160 ft, 48 m

Price from: £0

Jasper with Stainless Woven Mesh


Jasper filterpumps with self-cleaning intake screens are low and medium head submersible pumps with a maximum output of 1000 l/min and a maximum head of 35 metres. Corrosion resistant 316 stainless steel versions are also available.

  • Maximum Output – 1000 L/Min
  • Maximum Head 35 m

Price from: £8,090

Stainless mesh Omnia


Our Omnia range low head submersible pumps have a maximum output of 220 litres/minute and a maximum head of 1.1 bar. They have single phase motors and integral self-cleaning suction intakes and are ideal for sampling and small open loop heat pump systems.

  • Maximum Output 220 L/ Min, 45 US GPM
  • Maximum Head 11 m, 25 ft

Price from: £1,970

RF200 self-cleaing filter fitted with woven mesh

RF200 Filter

Our RF200 self-cleaning filters provide effective screening for surface mounted pump intakes. The RF200 series can filter from 50 microns - 6 mm, handling up to 220 litres a minute, 58 US GPM.

  • Screen Up to 220 L/Min, 58 US GPM
  • Filter From 6 mm Down to 50 Microns
  • US Mesh 3 Down to 230

Price from: £1,600

RF600R Air Filter

RF600AR Filters

Our RF600 self-cleaning intake strainers are for attachment to the suction hose of surface mounted pumps. These all stainless-steel construction mechanical filters can deliver up to 376 m3/hour, 1660 US GPM

  • Screen up to 376 m3 / hour, 1660 US GPM
  • Filter from 6 mm down to 315 microns
  • US Mesh 3 down to 50

Price from: £8,235


RF800LW Filters

Our RF800LW industrial strength, low maintenance, stainless steel self-cleaning basket filters protect pumping equipment from blocking and blinding when pumping dirty water. These suction side screens handle up to 1085m3/hour, 4,775 US GPM.

  • Screen up to 1085 m3 / hour, 4775 US GPM
  • Filter from 6 mm down to 1 mm
  • US Mesh 3 down to 18

Price from: £10,355

RUBI Filterpump


RUBI filterpumps are extremely tough filterpumps, suitable for heavy industrial applications. They will pump and screen up to 2000 litres a minute, 528 US GPM, and have a maximum head of 10.2 bar, 145 psi.

  • Maximum output - 2 m3 / hr, 528 US GPM
  • Maximum head - 102 m, 335 ft

Price from: £11,110

In the drive to reduce carbon emissions we've seen an increase in enquiries for the use of our products with open loop water source heat pump systems, and cooling water generally.

A Rotorflush submersible filterpump screening and pumping water directly from the water source prevents debris and particulate entering your heat-pump system. 

How Rotorflush Filterpumps Protect Heat Exchangers

Rotorflush submersible filterpumps with integral self-cleaning suction intakes enable water to be screened and pumped simultaneously.  This makes them the ideal option for supplying water for cooling systems and water source heat pump installations.

Open Loop Water Source Heat Pumps

Heat pump systems work by recovering heat (solar energy) stored naturally in the air, ground or water and using this recovered heat as a source of energy to heat homes and businesses.  An open loop water source heat pump system uses open water, such as a lake, river, pond or the sea as its heat source. The water passes through heat pumps to transfer its heat before being returned to the water source.

Heat pump installers and manufacturers are recognizing the benefits of Rotorflush submersible pumps for filtering and pumping water through plate heat exchanges.

The filterpump's self-cleaning intake prevents weed and other debris from entering the system. This protects the narrow apertures within the heat exchanger and reduces the need for secondary filtration.

They offer a low maintenance solution to supplying open loop water source heat pumps where the water quality may be variable.

District heating required
Small filterpump ideal for domestic heat pump installation

Rotorflush Self-cleaning Intakes for Cooling Water

There is massive and increasing demand for cooling water - both for industrial and domestic applications. Smart buildings are using heat exchange to save energy costs and reduce their environmental impact.

Cooling Water

A typical example would be the use of river water to cool servers. Raw water is abstracted and pumped through a heat exchange system before being discharged back to the river.  Screening the water on intake will prevent debris, weed and aquatic life from blocking heat exchange equipment. 

Rotorflush Filters Ltd offer self-cleaning intake screens for use with dry mounted pumps and vertical turbine pumps. We also make and supply submersible filterpumps with integral self-cleaning suction intakes. These both enable screening and pumping of water at source.

In the UK and Europe regulations are in place for Eel and Fish protection that limit cooling water intake velocity and the size of screen mesh that can be used. Similar protections are in force in North America within EPA Rule 316(b) for cooling water intakes.

Rotorflush self-cleaning intakes are designed for low intake velocity, 1 - 2 mm mesh screening and low maintenance.

Clogged Vertical Turbine pump in need of a Rotorflush self-cleaning intake
How a vertical turbine pump can be kept blockage free with a Rotorflush self-cleaning intake

Why Opt for a Open Loop Water Source Heat Pump System?

John Barker-Brown, special projects manager at British heat pump manufacturer Kensa Heat Pumps says:

“Using water as your energy source has a number of advantages when compared to air or ground source:

The heat transfer rate from water is far higher than that in the ground or air. The flow/circulation of the water source provides constant energy replacement.

The use of a water source removes the need to dig large trenches, often reducing the cost of installation compared to a ground source.
The return temperature to the heat pump is usually higher than either the ground or winter average air, increasing the CoP (coefficient of performance) of the heat pump.”

Fortunately for those living or working near an accessible water source, Rotorflush self-cleaning intake basket strainers and submersible filterpumps with built-in self-cleaning intake screens make drawing and using water for heat exchange easier and more feasible.

Pipework for industerial heat pump installation on a huge poultry farm

Why Are Open Loop Systems Becoming More Popular?

The UK and other countries are seeking to reduce their output of greenhouse gases by the increased use of renewable energy and low energy systems

In the UK the Renewable Heat Incentive (the RHI) provides an incentive for installing heat pump systems. RHI is a payment system for the generation of heat from renewable energy sources introduced in the United Kingdom on 28 November 2011.  It applies to industrial and domestic installations.

Water has a greater capacity to retain heat than air, and it is better at transferring heat in plate heat exchangers. Air systems are at their least efficient on the coldest days when they are most needed, whereas river and lake water is a more efficient store for heat, retaining energy from the sun that has built up in the preceding months.

The Dept for Energy and Climate Change (DECC) recognises that there is huge scope for open loop water source heat pump systems within the UK and has published a map identifying the 40 urban areas that can immediately benefit from the adoption of these systems.

The use of Rotorflush filter pumps has increased the feasibility of low maintenance open loop water source heat pump installations.

Agreeable river-side district heat pump location
Joels set up on the banks of the Thames
Omnia with stainless steel mesh

Domestic Heat Pump Filtration

I contacted the team at Rotorflush Filters Ltd as I was looking for a submersible pump that would work well alongside my open loop heat pump systems.

Joel Gustafsson

Joel Gustafsson Consulting

Simple, reliable filtration was a prerequisite to it working and the self-cleaning filterpump suited the application perfectly.

The sales and technical team were happy to discuss my requirements and recommended the Omnia O35012-16MA fitted with a 50 micron mesh. All communication was efficient and I was updated at each step of my order, the team worked hard to expedite delivery and made a custom tweak to the cable to assist with the application.

As a consequence, the installation was easy and I am very pleased with how it is working, thank you to all at Rotorflush Filters.

Frequently Asked Questions

All of our self-cleaning intake screens are specified to suit required flow rates, for instance filterpumps are recommended based on the flow rate and pressure your system needs and intake strainers and screens are specified according to the maximum flow through that is required. 

Consideration should be given to what mesh size you need - top tip, go for the largest mesh size you can to minimise maintenance. This will be determined by the smallest aperture the water you are drawing needs to go through; check with your heat pump manufacturer.

If you need advice or more information please get in touch.

We need to know how much water your heat pump system needs - the maximum flow rate will determine the size of intake and pump required.

We also need to know the operating pressure. To accurately specify this we need to know:

  • The static head - i.e. how high the water needs to be lifted
  • The pressure drop through the heat exchanger / heat pump from the manufacturer
  • The length of the pipe run from the water source and back to the water source
  • The pipe diameter and ideally the number of bends / elbows in the pipe work.

This will allow us to calculate the overall pressure drop through your system and specify the correct filterpump.

Not every submersible pump is suitable to be turned into a filterpump.

When we manufacture a filterpump we re-engineer the pump to have an additional impeller to provide the wash water to the screen without sacrificing the output of the pump. 

Re-engineering a pump can often invalidate its warranty. Therefore, we would highly recommend that you opt for one of our Filterpumps that come with their own 1-year warranty.

If however you have a particular pump that you would like to be made into a filterpump please contact us to discuss.

Increasingly, the Environment Agency makes taking steps to protect eels a condition of abstraction licences in England and Wales. These environmental regulations may have a bearing on the type of filterpump or strainer you need.  

Our Products can be sized to account for Eel Regulations or EPA rule 316(b) if applicable, so that intake velocity and mesh size meet regulatory requirements for the flow rate you require. We are happy to advise, please get in touch.

Yes – because our products pump and filter directly from a dirty water source, there is less need for additional expensive in-line filtration. All our products have built-in self-cleaning backwashes that prevent intake screens from blocking, keep pumps clear and protect other connected equipment. 

This reduces maintenance, minimises downtime and can extend the life of pumps. In addition, our products are easy to install directly in your water source, often avoiding the need for expensive building and engineering work.

Why Rotorflush?

River Installation

UK Designed and Manufactured

Talk to our friendly team of engineers to discuss your design requirements.

  • Built to your water output
  • Filter down to 3 microns
  • Hand built in the UK
Water Filter

Leading Water Filter Experts

Talk to our friendly team of engineers to discuss your design requirements.

  • Industry experts for 20 years
  • 200 installations
  • Installed worldwide
Rotorflush Filter

Worldwide Delivery and Service

Through our worldwide distribution network we offer the ability to:

  • Deliver filterpumps worldwide
  • Help service your filterpump
  • Repair broken filterpumps

Talk to an Expert About Your Project

Call us now on 01297 560 229 | 8am - 5pm UK time

Or leave us a message and a member of our expert, friendly team will call you back and will find the filter pump for your needs.

  • We work with you to identify your issues
  • We can design & build a custom solution
  • We can deliver our solution worldwide
Contact us
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