Multi-Cyclone Pre Filter


MultiCyclone is a pre-filtration device that is capable of saving water and reducing filter maintenance. The MultiCyclone works on the basis of centrifugal water filtration. There are no moving parts to wear and tear, and no filter media to clean or replace.

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  • Pre-filtration device
  • Save water
  • Reduce filter maintenance
  • No Filter media to clean and replace
  • Extend the life of your existing filter
  • Cut water consumption
  • Reduce frequency of backwashing
  • Works on the basis of centrifugal water filtration
  • No moving parts to wear out
  • Centrifugal filtration

    1. Incoming water enters 16 hydro cyclones tangentially, generating a strong centrifugal effect.
    2. The sediment is spun out to the hydro cyclone’s wall, and then spirals down to the sediment bowl.
    3. The filtered water migrates towards the center of the hydro cyclone where the flow reverses and spirals upwards through the outlet.
    4. Accumulation of sediment can be visibly monitored through the MultiCyclone’s clear sediment bowl.
    5. The MultiCyclone is easily cleaned by opening the valve. Only 15 litres of water is discharged to cleanse the MultiCyclone.

    Save Water

    MultiCyclone is ideal as a pre-filter, extending the life of your existing filter and cutting water consumption as it eases the workload on your swimming pool filter.

    Reduce backwash frequency 

    MultiCyclone + Sand (granular) filter = Reduction in backwash frequency + Extends the life of the filter media The reduction in backwash frequency of a sand filter could result in the savings of up to 5,000 litres of water per year for an average domestic swimming pool.

    Reduce filter cartridge maintenance

    MultiCyclone + Cartridge fi lter = Reduction in cleaning frequency + Extends the life of the filter cartridge Waterco’s MultiCyclone is designed to work effectively with an extensive range of pumps and filters.


    Laboratory tests

    The MultiCyclone was field tested on an outdoor swimming pool and the contents of its sediment bowl were laboratory tested. The laboratory test below revealed that the Multi Cyclone was capable of trapping sediment between 10 to 100 microns.

    The filtration efficiency of the MultiCyclone was tested by feeding 5 to 80 micron dust particles through the MultiCyclone and analyzing the percentage dust particles trapped in the sediment bowl. The laboratory test below revealed that the MultiCyclone was effective in filtering particles sized 40 to 80 microns.

    Micron RatingParticle Size
    11.6 NTU Infl uent
    Particle Size
    10.2 NTU Effl uent
    Average % of
    Particles trapped
    5.0 – 80.0
    5.0 – 20.0
    20.0 – 40.0
    40.0 – 60.0
    60.0 – 80.0

    DE powder was passed through the MultiCyclone to discover its effective flow rate. At 50 litres a minute, the MultiCyclone was able to remove approximately 60% of DE powder and at 350 litres a minute; the MultiCyclone was able to remove 80% of DE powder

    Minimum flow rate
    50 litres per minute
    Maximum flow rate
    500 litres per minute
    Maximum pressure
    400 kPa (58psi)



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