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Pool Supplies Pool Replacement Parts pool replacment filter cartridges - Intex, Jandy, Hayward and more filter cartridges Pool Filter Replacement Grids - Round, Square All Major Brands of Pool Grids


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Backwash Valves (DE/Sand Filters)

There are 2 basic types of backwash valves. Multiport valves, also called MPV valves, mount onto bulkhead fittings on the side of a Sand or D.E. filter. Many sand filters use a top mounted multiport valve, located on the top center of the filter tank. The advantages of a Multiport valve are that they have multiple ports. This allows for more options than simply Filter or Backwash. 
The push-pull valve, also called a slide valve, mounts to bulkhead fittings on the side of a Sand or D.E. filter. The advantages of a Push-Pull valve are that they are simple to use, simple to understand, have very few parts, and are less restrictive to water flow than the multi-port valve.

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