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Thread: Hayward sand filter reassembly

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    Hayward sand filter reassembly

    I have a Hayward S310S sand filter and took it all apart because I was suspecting a damaged lateral. During disassembly, I noticed that the upper elbow and diffuser just pulled apart easily, but the lateral assembly was bonded or puttied to the lower elbow and the flange ( aka bulkhead fitting according to the manual).

    I ended up having to put the lower elbow in the vise and use a 2x4 to twist the lateral assembly off of it. It seems like it wouldn't need to have glue since it has 500# of sand sitting on it and even backwashing probably wouldn't make it move.

    When I reassemble it, should I use putty or glue or just press the pieces together?

    Thanks in advance
    SE Kansas
    25,000 gal in-ground fiberglas
    Hayward S310S Filter
    Hayward Super II pump

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    Mod Squad tim5055's Avatar
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    Re: Hayward sand filter reassembly

    I would think press fit myself.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    Re: Hayward sand filter reassembly

    Quote Originally Posted by tim5055 View Post
    I would think press fit myself.
    That's what I thought. If the upper elbow (which is above the sand) would stay together during all the different phases of water flow (filter, backwash, etc.) It seems that the lower assembly wouldn't come apart either.
    SE Kansas
    25,000 gal in-ground fiberglas
    Hayward S310S Filter
    Hayward Super II pump

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