A Rotorflush self-cleaning filter is a water filter or strainer that attaches to the suction hose pipe of a surface mounted water pump. Its purpose is to screen or filter dirty water so that the pump and any other equipment is protected from blocking.

A self-cleaning water filter or strainer on the pump suction hose will allow a pump to operate in very challenging water. Extreme weather can turn a clear river into a torrent of weed, mud, branches, rubbish, and sometimes sewage from overflow. Even the hardiest chopper pump may struggle to abstract in such conditions. A self-cleaning filter on the pump suction hose screening to, for example 1 mm, can allow powerful centrifugal pumps to operate in spite of such conditions.

The purpose of a self-cleaning strainer is to prevent the intake screen from blocking.  Unlike static strainers and intakes, Rotorflush self-cleaning filters continuously backwash their filter mesh to keep the pump intake clear while protecting the pump from clogging with weed, debris and other detritus.

A continuous backwash pushes away any particulate that might block the intake mesh.  The backwash operates whenever the pump is working so that rubbish and weed do not get a chance to accumulate on the mesh. 

These self-cleaning pump intake filters can be used when pumping raw water, industrial process water, laundry water, final effluent from treatment works, dairy run-off, or anywhere else where contaminants and particulate pose a problem for pumps, heat exchangers, spray bars, fountainheads or irrigation equipment.

Rotorflush self-cleaning filters and strainers are simplicity itself.  They have two connections – the filter output connection to a pump suction line, and a smaller backwash connection. They are designed to be powered by a small amount of pumped output, which means they do not need their own power supply.

Their powerful cleaning rotor and jets clear the entire filter mesh every rotation – and the jets spin at 60+ rpm. Rotorflush pump suction intake self-cleaning filters and strainers allow water to be filtered and pumped simultaneously, often doing away with the need for secondary filtration.

Their brilliant, straightforward and scale-able design means these self-cleaning filters and screens can be used on the suction intake of a huge range of pumps. Rotorflush self-cleaning filters can be used on the suction hose of surface mounted pumps delivering duties from 30 litres a minute up to 2000 m3 / hr. 

They are easy to connect and install, ideal for a wide range of applications and suitable for most locations.  Often the need for major civil engineering work at permanent intake sites is reduced if Rotorflush self-cleaning intakes can be used in lieu of more expensive purpose-built screening. 

Maintenance is infrequent. Rotorflush self-cleaning filters and screens are often the first line of protection to cooling systems and heat exchanges, screening source water in compliance with environmental regulations.