Filter Cartridges

There are two main designs of swimming pool filter cartridges; surface and depth filters.  Surface filters scrub the water of substances which block the surface of the filter. These are commonly made of thin materials such as paper and cloth.  Depth-type filters remove particles and contaminates of much smaller size.  Generally, the larger the filter size, the more water can flow through.  Filters are sized along with pool pump and water lines based on swimming pool volume and bather load.

Source:

• http://www.lenntech.com/systems/sediment/comparison/cartridgefilter-bagfilter.htm

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