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  1. #1
    Join Date
    Mar 2009
    Posts
    2

    Question Air locking drain?

    Our kitchen sink won't drain properly. It is a double sink, the two sinks drain in to one pipe which then goes to the P trap. Then that goes to about a 3 foot pipe that kind of runs horizontal then it hits a tee and goes down. There is a vent in the long pipe after the P trap. Now, when you dump alot of water down one sink real fast--like pulling the plug--it will start coming up in the other sink. Then SLOWLY start draining down. If you have the plug in one side and run water in the other side it will barely drain, and it blows bubbles up the side with the plug in it. We have taken the pipes off at the sinks and they are clean. Now if I take the vent out it drains fast, but then pukes water out the hole where the vent was. It seems if I loosen the vent a little it helps some, but still not good. Liquid cleaners don't do anything. Any ideas????? Thanks.

  2. #2
    Join Date
    Jun 2007
    Location
    Fayette County, Ohio
    Posts
    5,792

    Default Re: Air locking drain?

    It sounds like your vent is clogged or improperly installed. The other problem may be the tee it really should be a wye connection.
    Jack
    Last edited by JLMCDANIEL; 03-01-2009 at 08:50 PM.
    Be sure you live your life, because you are a long time dead.-Scottish Proverb

  3. #3
    Join Date
    Feb 2009
    Posts
    17

    Default Re: Air locking drain?

    those mechanical vents have a useful service life. have you tried a new one?

  4. #4
    Join Date
    Mar 2009
    Posts
    2

    Default Re: Air locking drain?

    Thanks guys. Yes, I did put a new vent in. The other kicker, is we have been in this house for almost two years, and it didn't do this when we moved in. Baffled.......

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