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A disc filter is a type of water filter used primarily in irrigation, similar to a screen filter, except that the filter cartridge is made of a number of discs stacked on top of each other like a pile of poker chips. The water passes through the small grooves in between and the impurities are trapped behind. The higher or lower filtration quality, defined this as the higher or lower quantity and size of particles that the filtering element is able to retain, depend on the geometry and size of the channels, the length of these and the number of generated intersection points.
Some types of disc filters can be backflushed in such a way that the discs are able to separate and spin during the cleaning cycle.
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