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Thread: skimmer plate/thingy

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    Join Date
    Oct 2012
    Houston, TX

    skimmer plate/thingy

    After years of successful TFP maintenance of my AGPs, I'm pretty much taking over care of an in-ground pool about 30 miles from my house. So please be patient as I will probably ask a bunch of newbie questions all over again.

    The pool has a skimmer and bottom drain but only 1 pipe coming out of the ground to the pump inlet (I was expecting 2 lines plus a valve).

    The plumbing looks like this:


    There are two holes at the bottom of the skimmer but it seems like only 1 of them has suction (I think), I'm guessing that is normal. Sitting at the bottom of the skimmer is this thingy. Does this normally provide some kind of adjust-ability as to how much suction comes from the skimmer vs. bottom drain? Also, does it allow me to drain the pool below the skimmer without sucking air so i can adjust the CYA level? Any inputs would be appreciated!

    That thing is really stained, but probably can't be cleaned. The inside of the skimmer looks the same.
    Skimmer thingy.jpg
    Intex UltraFrame 14'x48in - 3,900 gallons. Intex 1600 GPH combo Sand Filter/SWG Hard Plumbed w/Hayward skimmer, suction & return. Borates.
    And... 15k gallon kidney shaped gunite 1975 vintage. Hayward DE3620 filter + Hayward 750 pump.
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  2. Back To Top    #2
    Mod Squad tim5055's Avatar
    Join Date
    May 2014
    Columbia, SC

    Re: skimmer plate/thingy

    As you have figured out, of the two pipes in the bottom of the skimmer, one goes to the main drain and one back to the equipment pad.

    I don't have that in my skimmers (all home run like you were hoping) but as I understand it, yes it should give you some adjustability.
    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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    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: skimmer plate/thingy

    On the bottom of the space ship should be a piece of plastic that can slide over the hole, doing so will force more suction from the floor. That said, it is usually best to have most of the flow going through the skimmer.

    This float diverter does not usually seal air tight and will not likely allow you to drain down below the skimmer. You might be able to do so with a vacuum hose put into the skimmer hole.
    Jason, TFP Moderator
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  4. Back To Top    #4
    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: skimmer plate/thingy

    As said above, underneath that UFO should be a plate that slides over a hole. If the plate is fully closed, all teh suction goes to the main drain. All the way open, suction is to the skimmer. If the water drops too low in the skimmer, the float inside - yes, it should rattle when you shake it, nothing's broken - gets sucked against the hole and all the suction goes to the main drain. How I adjusted mine was I watched the turbulence in the skimmer without the diverter valve. Then I started closing it up until there is just the slightest detectable difference. Seems to work well.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
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