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Thread: What's that "plug" at the bottom of my pool called?

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    What's that "plug" at the bottom of my pool called?

    No, not the main drain. I have a 25yo gunnite pool. There's a plug in the deep end near the main drain, that I'm told is there to allow ground water in to the pool so the pool doesn't float, or the so back pressure doesn't otherwise cause problems. What's that called?
    Whatever it is, mine dislodged this winter. Pool was half empty when I went to open it this year. Really pleasant when, after you see pool level drop on a rainy day, it goes up the sunny day after the rain.

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    Mod Squad jblizzle's Avatar
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    Re: What's that "plug" at the bottom of my pool called?

    hydrostatic valve
    Jason, TFP Moderator
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    bmoreswim's Avatar
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    Re: What's that "plug" at the bottom of my pool called?

    A man of two words.
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    Mod Squad jblizzle's Avatar
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    Re: What's that "plug" at the bottom of my pool called?

    Well, I answered the question didn't I?
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
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    Mod Squad pooldv's Avatar
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    Re: What's that "plug" at the bottom of my pool called?

    With 30k posts he has to conserve! LOL!
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