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Thread: Confused: 2 suction openings in skimmers. One skimmer both open, second only one

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    Join Date
    Oct 2010
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    Eastern TN
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    Confused: 2 suction openings in skimmers. One skimmer both open, second only one

    I have an air entrapment problem with my shallow skimmer. To reduce water loss I decided to plug it besides having skimmer valve off.

    I noticed that my deep skimmer has 2 2" threaded openings in the bottom but only one is open. The shallow skimmer has 2 2" threaded openings in the bottom.

    Can someone educate me as to why there would be more than 1 suction opening per skimmer? What is the usual configuration?
    Plaster pool inground 22,000 gallons with spa. Pentair Intelliflo, IC40 salt generator, WiFi control/Easy Touch.
    Hayward 1.5 HP pump on 750 gallon spa. Sand filters. Auto chlorinator on spa. Auto water level. Dolphin M500. TF100 XL with Speed Stir. Apera Instruments AI311 PH60 Premium Waterproof pH Pocket Tester

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    Join Date
    Nov 2015
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    Chicagoland, IL
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    Re: Confused: 2 suction openings in skimmers. One skimmer both open, second only one

    My skimmer s have 2 openings. One goes to suction, one goes to a port in the wall just below the skimmer, I think to keep if from going dry if the water gets below the skimmer opening. not sure this is your setup or not.

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    Join Date
    Aug 2012
    Location
    Austin, Texas
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    1

    Re: Confused: 2 suction openings in skimmers. One skimmer both open, second only one

    My second suction pipe goes to our water feature pump.

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    Mod Squad pooldv's Avatar
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    Aug 2012
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    Re: Confused: 2 suction openings in skimmers. One skimmer both open, second only one

    The hole away from the pool is plumbed to the pump. The hole closer to the pool can either be blocked off, plumbed to a bottom drain or plumbed to an equalizer pipe in the pool wall directly below the skimmer.
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