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Thread: Venturi Skimmer question

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    Join Date
    Oct 2015
    Location
    Texas
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    Venturi Skimmer question

    Hello. We just had a new inground pool installed. 20'x40'. saltwater, ~24K gallons.

    My question is related to the venturi skimmer. PB insists on setting the mini-skimmer valves to barely open. I've read these should be set to full open. Just wondering why PB is going against recommendation from skimmer manufacturer. Thanks

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    Join Date
    Jan 2014
    Location
    Buckeye AZ
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    807

    Re: Venturi Skimmer question

    maybe he wants most of the water to actually make it to the filter for the first little while, to get all the dust and plaster? A full venturi is great for getting leaves to come over to the skimmer and get in the basket, but a portion of the water ends up back in the pool before making it to the filter.
    10,500 gal IG, Topaz Pebble, auto-level
    Hayward DE filter, 2HP Ecostar VSP, ProLogic PS-4, GVA actuators
    Cal Pools Wave Force Plus (wall return jets plus 2 floor pop-ups), Venturi Skimmer
    Water sheer, 2 wok pots, bubbler stem on the baja step
    ColorLogic Mutlicolor LED lamp. Taylor 2006+speed stir

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    Join Date
    Oct 2015
    Location
    Texas
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    2

    Re: Venturi Skimmer question

    Thank you for the response. Thing is the skimmer valve on suction side is closed. Only the valves on return side for the mini skimmers (venturi) are slightly open. The basket has a very fine mesh liner in it too and liner is usually just floating inside basket which indicates too me not much skimming action going on. Thanks
    Free-form inground, ~24K gal pool/spa, all pentair equipment: pumps, filter Pentquad 100 DE, mastertemp 400BTU, Pentair legend, intellichlor saltcell, screenlogic 2

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    Join Date
    Sep 2014
    Location
    North DFW
    Posts
    161

    Re: Venturi Skimmer question

    I have Venturi skimmers in my pool. The suction is closed, and the return is barely open. I have a considerable amount of flow into the skimmers. You can usually tell by looking at the weir door and seeing how far down it is. One thing to remember, is that a variable speed pump will effect this. I bumped my rpm up from 1000 to 1500 to get a good flow at this valve setting.


    39' x 18' IG 3.5X4.5X9 34k gallon w/ raised spa, 3 stone scupers
    Jandy 60 SqFt DE, Jandy PDA PS6, Jandy JXi400 heater, Jandy 2.0 EPump w/SVRS
    A&A Manufacturing ICS w/G4 venturi heads
    2 incandescent lights in pool, 1 in spa.

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    Join Date
    Jan 2014
    Location
    Buckeye AZ
    Posts
    807

    Re: Venturi Skimmer question

    Quote Originally Posted by science-pool View Post
    Thank you for the response. Thing is the skimmer valve on suction side is closed. Only the valves on return side for the mini skimmers (venturi) are slightly open. The basket has a very fine mesh liner in it too and liner is usually just floating inside basket which indicates too me not much skimming action going on. Thanks

    ok, re-reading your question. The current status is that the skimmer suction line, to the filter, is totally closed, and the return lines, to the venturi port that goes back into the pool, are barely open. And you are wondering why the suction lines are totally closed, or wondering why the return line is barely open, or you are wondering both?
    10,500 gal IG, Topaz Pebble, auto-level
    Hayward DE filter, 2HP Ecostar VSP, ProLogic PS-4, GVA actuators
    Cal Pools Wave Force Plus (wall return jets plus 2 floor pop-ups), Venturi Skimmer
    Water sheer, 2 wok pots, bubbler stem on the baja step
    ColorLogic Mutlicolor LED lamp. Taylor 2006+speed stir

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