prefiltration

Self-cleaning filter systems are used to filter surface water. They are often used as a safety feature of an installation as well as pre-filters for water intake. They can be used to remove organic and inorganic materials. The filters contain a stack of grooved plastic discs mounted on 4 perimetric shafts.

Installation of Self-Cleaning intake screen filter to prevent large particles such as sticks, algae, fish, and other organics from entering the pump and causing damage. The screen is installed in the water at the end of the suction line, below the foot valve.
Self-cleaning models offer a pressurized backwash line (supplied by the pump) with internal nozzles that rotate the screen to continuously clean the screen and therefore reduce maintenance.

Self-Cleaning suction filter
Prefilters are installed when additional protection is required as well as to prevent scale build-up in suction lines and pumps.
Mounted on centrifugal pump inlet to protect against impeller damage and restricted flow/cavitation.
The filter is installed submerged in water. When pumping starts, the water flows through the screen while organic material and other floating elements are accumulated at the external surface of the screen which prevents their entry to the pump and irrigation system.

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