Filter Cartridges

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A filter cartridge separates solid particles with a porous element (usually synthetic fabric) wrapped around a cylindrical core as a filter medium. This cylinder forms the cartridge, which can be more easily removed or replaced than loose filter media, such as sand.

Filter Cartridge
Filter Cartridge


Types

There are two main categories of cartridge filters:

  1. Surface cartridge filters, also called "fabric cartridges," are the most common for use in residential pool and spa installations. Their filter medium is a single layer of synthetic fabric, attached by pleats to a central core, forming a cylindrical shape. Water enters the filter through a baffle system, enabling it to flow evenly over the fabric, which traps small particles. These filters may incorporate a single cartridge, or multiple ones.
  2. Depth cartridge filters are thicker, and permit filtration at a greater volume.


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