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    Larry01's Avatar
    Larry01 Posts: 1, Reputation: 1
    New Member

    Dec 22, 2006, 07:06 AM
    Shower gurgles when toilet is flushed. AAV?

    Only recently, My shower gurgles when the toilet is flushed. I read your response to a similar question with the response, "Somehow you're not venting the system. Check the AAV to be sure it's working.". I do not however, know what an AAV is (or where it is located), could you expand on this?

    jgj6331's Avatar
    jgj6331 Posts: 153, Reputation: 19
    Junior Member

    Dec 22, 2006, 08:19 AM
    Check this thread... it may answer your question..
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber

    Dec 22, 2006, 01:50 PM
    Hey Larry,
    You probably don't have a AAV,(Air Admittance Valve) (see image)for a vent. It's more likely you're vented by the lavatory roof vent.. This cold be iced up or be blocked by leaves or a dead critter but I would snake from the lavatory roof vent. Put out enough cable to reach the base and about 18 feet more. Good luck, tom

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