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Thread: VGB Drain Cover Question

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    VGB Drain Cover Question

    Hey guys,

    As you know I am a new pool owner. How can I tell if I have a VGB compliant main drain cover installed or not? Obviously I know that a small drain like one in your shower is not VGB compliant, but I do have a plastic raised drain cover. Are these all VGB compliant or is there something specific to look for?

    Thanks for all the help on these boards. I am having a great 1st pool season so far! (except it has been too cool to swim!)
    32000 Gallon 18'X40' Rectangular Gunite pool. Pentair 60sqft DE filter. Electric heat pump. Aquamatic Pool Cover.

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    JasonLion's Avatar
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    Re: VGB Drain Cover Question

    Starting in 2008 all compliant drain covers have been marked “VGB 2008.”

    Some older covers, without that mark, are compliant, but that tends to be difficult to verify.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: VGB Drain Cover Question

    Oh, well that is trouble. I'll have to swim down there and take a look, but my guess then is that it isn't one. Are they hard to install as a DIY, or is this something I should be able to handle? I certainly don't want to pay the pool company for SCUBA time if I don't have to. Reason I am concerned is I have a daughter and soon she and her friends will be all over this pool!
    32000 Gallon 18'X40' Rectangular Gunite pool. Pentair 60sqft DE filter. Electric heat pump. Aquamatic Pool Cover.

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    In the Industry

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    Re: VGB Drain Cover Question

    VGB compliance has two parts for a suction outlet compliance. First is that the cover must conform to ANSI 112, which has been a federal law since 2008, as Jason Lion stated - so you can not buy a non-compliant cover in the US since 2008. So you should be good there. The other part is that there should be a sump (depression) under the cover equal to 1-1/2 times the pipe diameter, which would be 3" deep for a 2" pipe. Alternately, "sumpless" covers are available now that can be mounted on a flat wall or floor surface. They protrude a little more than the ones with a sump underneath, but they are fully compliant.
    BigSwede52 - APSP / CBP
    Engineer / Aquatics Consultant
    Austin, Texas

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    Re: VGB Drain Cover Question

    I forgot to mention in the previous post to check the rated flow stamped on the cover to be sure you do not exceed the cover rating.

    There are usually three to four screws that hold the cover in place (on a round cover). If you use the same brand to replace your old cover, the screw pattern is the same on the VGB cover and it is a simple remove and replace with a screwdriver. If you change brands,I am not sure if this holds true or not.
    BigSwede52 - APSP / CBP
    Engineer / Aquatics Consultant
    Austin, Texas

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