The Cleanable Fiber Filter consists of a bundle of synthetic fibers sealed at both ends and arranged around a central collection tube.
One end plate is rotated so that the fibers are compressed and are aligned in a helical bed.
Filtration then takes place from the outside inwards. When the bed is full of solids, it is untwisted and backwash liquid is fed from the central tube. A gas purge can be used to separate the feed and the backwash streams.