Hayward SX144DA lateral assembly with center pipe for S144T sand filtersHayward Lateral Assembly with Center Pipe for S144T Filters, SX144DA$10699
Hayward SX144DA lateral assembly with center pipe for S144T sand filters
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Hayward Lateral Assembly with Center Pipe for S144T Filters, SX144DA

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$10699
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Quick overview

  • Genuine Hayward part Factory part number SX144DA, not an aftermarket underdrain.
  • For the S144T Made for the Hayward S144T Pro Series sand filter.
  • Center pipe included Supplied as the assembly with the center pipe, so you are not sourcing the standpipe separately.
  • Stops sand in the pool Cracked laterals are the usual reason a sand filter starts returning sand through the jets.
  • Complete set The whole lateral assembly, which saves guessing at how many individual laterals are broken.
  • Plan the sand change The tank has to be emptied of sand to reach the laterals, so order fresh media at the same time.
Full description and specifications ↓

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Product details

The Hayward SX144DA is the lateral assembly with center pipe for S144T sand filters. It is the genuine Hayward part, supplied as the complete underdrain rather than as individual laterals.

What the laterals do

At the bottom of a sand filter sits a set of slotted arms feeding a central standpipe. Water works its way down through the media, passes through slots too fine for sand to follow, and leaves through the center pipe. When one of those arms cracks, the slot barrier is gone and sand goes out to the pool through the returns, usually appearing as a fine layer on the floor within a day or two of the filter running.

Replacing them

This is a full day job rather than a quick swap. The laterals sit under the entire sand bed, so the tank has to be emptied before the assembly can come out. Buy the sand at the same time, because old media that has been shovelled out and sat in a bucket is not worth returning to the filter.

Check your model

This assembly is listed for the S144T. The Pro Series shares parts across nearby models, so read the label on your filter and match the part number before ordering.

Specifications
Brand Hayward
Manufacturer part number SX144DA
UPC 610377054379
Type Lateral assembly with center pipe
Fits Hayward S144T sand filters
Series Pro Series
Shipping weight 2.15 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which filter does this fit?
It is listed for the Hayward S144T. The Pro Series parts diagram covers the S140T alongside the S144T, so if you have an S140T confirm the part number against your filter before ordering.
Does it come with the center pipe?
Yes. It is supplied as the lateral assembly complete with the center pipe.
Why is my filter sending sand back to the pool?
A cracked or broken lateral is the most common cause. The slots that hold sand back have split, so media passes straight through the underdrain and out the return.
What else do I need for the job?
Sand. The laterals sit at the bottom of the tank, so all of the media has to come out to reach them and it is not worth putting old sand back in.
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