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Choosing the Right Rotorflush Filter or Strainer for your Project or Application

C J Hiscock

Published

Filters in a row

Choosing the Right Rotorflush Suction Intake Water Filter or Strainer 

There are many ways of screening or filtering water ahead of pumps or gravity intakes. Some are specific to particular applications or industries; many are wasteful of water time and money. Rotorflush products offer general purpose pumping and screening of natural and industrial waste water, providing low maintenance use by reducing blockages and downtime, and easy installation.

This page looks at Rotorflush self-cleaning water filters and strainers, to help you best meet your requirements. 

Nobody ever likes unblocking filters and screens.

Nobody ever likes unblocking filters and screens.

Rotorflush self-cleaning filters are used on farms, in factories, at water treatment works, and  in many other industrial sectors.  For example, water companies use our filters for sample preparation for water analysis, and to keep inlet screens clear. Farmers use our filters and filter pumps to recycle farmyard run-off, or prevent irrigation equipment from blocking. Others use our filters for keeping fountains running, an anywhere that dirty water needs to be pumped without clogging equipment.

So whether you are pumping out a tank or sump, taking water from a lake, pond, river, lagoon, or screening dirty water for irrigation, pumping back to land, sampling water for monitoring, moving industrial waste water or supplying a fountain or water feature, Rotorflush Filters Ltd has a product that will let you screen and pump simultaneously.

The key information you need to consider when deciding which product will best meet your requirements are:

Self-cleaning Suction Intake Screens - The Basics 

Rotorflush self-cleaning suction intake filters and screens are available in many sizes from small 30-litres-a-minute pond filters to 2000 cubic metres per hour raw water intakes. If you need a self-cleaning strainer or filter for a surface pump you already have, then we need to know:

  • The flow rate you are pumping (or the maximum flow rate if the flow through the screen is by gravity)
  • How finely you need to filter (top tip, always go for the largest size mesh you can get away with – reduces maintenance)
  • What you are trying to remove
  • Description of water quality (brackish, seawater, silty etc)
  • What size pipe you are connecting to
  • Do you need to comply with Eel Protection Regulations? (Find out more about eel regulations here)

This information enables us to determine the best size and configuration of self-cleaning intake for your requirements.

Set Up Diagram for Rotorflush filter

Schematic showing how a Rotorflush connects to a surface mounted pump.

What Rotorflush Can and Can't Do

Filtration can be problematic. It is important to know what you wish to filter for, and equally what your dirty water filter can handle. This is because most dirty water contains a mix of contaminants, unless it is dirty as a result of a specific industrial process. Therefore, the type of filter will often depend on the location, water quality and what it is in the water that causes the most trouble.

Difficult pumping conditions

Difficult Pumping and Filtration Conditions

Rotorflush Self-cleaning Suction Intake screens are used across many industry sectors and for a variety of applications. 

They are particularly efficient at separating out organic material and suspended solids from water. For example weed, leaves, and other debris, fibrous material, dairy run-off etc.  The screens and filters are ideal when the contaminated water is the same or as close as possible to the viscosity of natural water.

The Rotorflush self-cleaning mechanism is not designed to handle sludge, raw sewage, or water contaminated with oils and grease.

A Comparison of Rotorflush Filters and Strainer Types

So you can get an idea of the type of filter you may need.

Compare Rotorflush filters to find the right screening product for you. Rotorflush filters and screens are mechanical strainers with a built-in self-cleaning intake screen. They are uniquely different from standard intake filters. These pumps screen and filter out debris, weed, suspended solids in water as you pump. The intake self-cleans as you pump so that the intake screen stays clear, and your intake does not block.  Which Rotorflush Filter will suit your needs?

Self-cleaning Filter ModelMax Flow RatesRotorflush Self-cleaning Suction Intake Filter Applications and Use by Model Range….
RF100 Self-cleaning Filters30 - 90 litres / minuteDomestic and light industrial de-watering; water sampling for analysis; small water features; pond circulation.
RF100AN-Q Analyser Filter System30 litres / minuteFiltration for sample water; filtering sample water for analysers; 
RF200 Self-cleaning Filters 220 litres / minuteDe-watering; small irrigation systems and dirty water systems; protection for domestic water source heat pump systems; keeping fountains and water features running; screening final effluent.
RF300 Self-cleaning Filters560 litres / minuteDirty water systems; supplying wash water at waste water intakes; fountains; screening final effluent.
RF400 Self-cleaning Filters1000 litres / minuteDewatering; screening water source heat pump systems; screening for cooling water; filtration and eel protection for irrigation; screening industrial process water; screening for pumps in the mining industry. screening final effluent.
RF600AR Self-cleaning Filters125 - 379 m3 / hrGeneral purpose; water screening in difficult water conditions; protecting water source heat pump systems and screening cooling water; irrigation; screening industrial process water; livestock watering; screening for pumps in the mining industry; screening final effluent; ; screening for over-pumping and temporary pumping applications; waste water and water management.
RF800AR Self-cleaning Filters 174 - 870 m3 / hrHeavy industrial use; water screening in difficult water conditions; protecting water source heat pump systems and district heating systems; irrigation; screening industrial process water; screening for over-pumping and temporary pumping applications; waste water and water management.
RF1000AR Self-cleaning Filters217 - 1086 m3 / hrHeavy industrial use; water screening in difficult water conditions; protecting water source heat pump systems and district heating systems; irrigation; screening industrial process water; screening for over-pumping and temporary pumping applications; waste water and water management.
RF1100AR Self-cleaning Filters 239 - 1314 m3 / hourHeavy industrial use; water screening in difficult water conditions; protecting water source heat pump systems and district heating systems; irrigation; screening industrial process water; eel and fish screening; screening at raw water intakes.
RF600LW Self-cleaning Filters 160 – 730 m3 / hourWater filtration and screening for cooling water and heat pump systems; eel and fish screening; screening at raw water intakes; water management.
RF800LW Self-cleaning Filters and Eel Screens 217 – 1086 m3 / hourWater filtration and screening for cooling water and heat pump systems; eel and fish screening; screening at raw water intakes; water management.
RF1000LW Self-cleaning Filters and Eel Screens271 – 1357 m3 / hourWater filtration and screening for cooling water and heat pump systems; eel and fish screening; screening at raw water intakes; water management.
RF1100LW Self-cleaning Strainers and Eel Screens299 - 1642 m3 / hrWater filtration and screening for cooling water and heat pump systems; eel and fish screening; screening at raw water intakes; water management.
GT200 Liquid Solids Separator System14 m3 / hrLiquid / solids separation; filtering and emptying water storage tanks, recycling contaminated water removing debris from water for re-use or disposal.

FIND OUT MORE

Rotorflush Filters Ltd staff have years of experience of liquid / solids separation in agriculture, industry, water and waste water treatment applications, and are available to advise and answer any questions you may have.

Furthermore, we are more than happy to give technical advice about screen sizes, eel regulations and flow rates, as well as practical information about filters for specific uses.

Call us on +44 (0)1297 560229 or email sales@rotorflush.com to discuss your needs.

 

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