Backwash Filter for Dirty Water Pumps

What are Rotorflush Backwash Filters?

They are our stainless steel self-cleaning filters with a built-in backwash pump. The filter's backwash pump cleans the filter constantly, even if your main pump output is variable. Backwashing filters fitted with a backwash pump will self-clean independently of the flow rate being drawn through the filter.

What do Backwash Filters Do?

Two Kinds of Back-flushing Filters

Our backwash filters are self-cleaning intake filters for attachment to the suction hose of surface mounted pumps. All our self-cleaning strainers and filters incorporate our patented backwash cleaning system. It backwashes the intake screen continuously when water is being pumped, keeping the screen and mesh clear even in challenging water conditions. There are two kinds of backflushing filters that we offer, those that get their backwash supplied from the water being pumped, and those with a built-in backwash pump.

Backwash Filters Powered by Your Pump

In most of our self-cleaning backwash strainers the backwash powered by the pump they are attached to – a small portion of your pumped output is returned to the filter as backwash. This set up is simple and ensures that there is a backwash to the suction intake filter whenever your pump is running.

Filters with Built-in Backwash Pump

Self-cleaning Filters with Backwash Pump

However, some of our backwashing filters have a built-in submersible pump to provide a continuous backwash. These backwashing filters have their own integral backwash pump to keep the filter mesh clear.

This pump circulates a backwash to the filter mesh independently of your main pump. This is useful if your main pump is running on a variable speed drive, or if water demand is variable. It means that a constant backwash can be supplied whatever your water demand.

This allows you to vary the output of your pump without affecting the performance of the backwash in the filter, which remains constant and continuous thanks to the integral backwash pump.

Filter with built in submersible backwash pump

Self-cleaning suction intake strainer with built in automatic backwash pump to keep the filter backwashed and clear

Our backflushing filters can be fitted with tough nylon filter mesh or sintered stainless steel mesh and can filter from 60 - 315 microns. Larger backwash filters can be fitted with 1mm, 2mm, 3mm or 6mm mesh.

• Strong nylon or stainless steel filter mesh
• Filters from 60 microns to 6mm
• High reliability and easy to use
• Works with most centrifugal and progressive cavity pumps
• Continuous integral backwash keeps filter mesh clear
• Reduced capital, installation and maintenance costs