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Thread: Yet another vent question....(sketch)

  1. #1
    DIY Junior Member SuperDaddy's Avatar
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    Default Yet another vent question....(sketch)

    Just wondering if it is possible to vent a toilet in this manner (see pic).

    4" waste with a 3" vent line coming off the back of the waste line.

    I'm not sure if this is acceptable or not. I am worried about the actual "waste" getting caught on the tee portion on the "way down".

    I searched, but couldn't find anything that dealt with this scenario.

    Any thoughts?



  2. #2
    One who lurks Basement_Lurker's Avatar
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    Why don't you have the tee under the wall instead of the toilet and have a 90 going from under the toilet into the branch connection?

    Otherwise, if you are determined to use your current setup, you can swap out the tee for a wye fitting.
    Broken promises don't upset me. I just think, why did they believe me? -Jack Handy


    www.blackbirdkitchenandbath.com

  3. #3
    Plumber BAPlumber's Avatar
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    this is a fairly common setup for older homes. the (barrell vent) usually is used with a 2" Vent (code), I've seen it with a 3/4" vent (not code). I don't see a problem with a 3" vent, but no advantages.
    Brent

  4. #4
    Moderator & Master Plumber hj's Avatar
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    Default vent

    You need a "Y" rather than a "T", but otherwise it is okay. Depending on the rest of the plumbing system, you may only need a 2" vent however

  5. #5
    DIY Junior Member SuperDaddy's Avatar
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    Thanks for your help guys, I appreciate it.



  6. #6

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    Hope this quick scribble helps.It shows a 4x3 toilet bend into a sanitary tee that is below your 3" vent

  7. #7
    DIY Junior Member SuperDaddy's Avatar
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    Quote Originally Posted by bombjay View Post


    Hope this quick scribble helps.It shows a 4x3 toilet bend into a sanitary tee that is below your 3" vent
    Excellent. Thanks. I am still tossing around ideas.

    I appreciate the help.

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