Hayward SX311CD2FW bottom elbow assembly for Pro Series side mount sand filtersHayward Bottom Elbow Assembly for Pro Series Side Mount Sand Filters, SX311CD2FW$10399
Hayward SX311CD2FW bottom elbow assembly for Pro Series side mount sand filters
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Hayward Bottom Elbow Assembly for Pro Series Side Mount Sand Filters, SX311CD2FW

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$10399
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Quick overview

  • Genuine Hayward part The factory SX311CD2FW bottom elbow assembly for Pro Series side mount tanks.
  • Post 1996 tanks Listed for S-311 filters built after 1996, so check the build date before you order.
  • Side mount Pro Series Covers the S311SX, 311SXV and 360SX side mount sand filters.
  • Lower internal connection The elbow sits at the bottom of the tank where the standpipe meets the lateral assembly.
  • Sold as an assembly Supplied complete rather than as loose pieces.
  • Stops sand in the pool A cracked or loose bottom elbow is a common reason sand starts returning to the pool.
Full description and specifications ↓

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Product details

The Hayward SX311CD2FW is the bottom elbow assembly for Pro Series side mount sand filters. It is the genuine Hayward replacement for the S311SX, 311SXV and 360SX tanks.

Check the build date

Hayward lists this elbow for S-311 filters built after 1996. Tanks from before that change use different internals, so read the label on the tank before you order rather than matching on the model number alone. The source listings also show the second model as 311SXV in one place and 311XV in another, so compare against your own tank label if you are close to that model.

What it does

The bottom elbow sits deep inside the tank where the standpipe meets the lower plumbing. Everything the filter passes moves through that joint, so when it cracks or loosens, sand starts finding its way back to the pool through the return lines. Replacing the elbow while the tank is open is far quicker than opening it twice.

Specifications
Brand Hayward
Manufacturer part number SX311CD2FW
UPC 610377292900
Part type Pool filter part
Type Bottom elbow assembly
Fits Hayward Pro Series side mount sand filters S311SX, 311SXV (also listed as 311XV), 360SX
Vintage S-311, after 1996
Shipping weight 1.6 lb
Ships Parcel

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Questions and answers

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

Will this fit my older S-311 filter?
It is listed for S-311 tanks built after 1996. Hayward changed internals on this family, so confirm the build date on the tank label first.
Which filters does it cover?
Hayward Pro Series side mount sand filters, models S311SX, 311SXV and 360SX.
Is it a complete part?
Yes. SX311CD2FW is supplied as a bottom elbow assembly, not as individual components.
Why would the bottom elbow need replacing?
It is a low tank connection that takes constant flow. When it cracks or works loose, sand can pass into the return lines, which is the usual reason people open the tank.
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