Yet another vent question....(sketch)

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by SuperDaddy, Mar 25, 2008.

  1. SuperDaddy

    SuperDaddy New Member

    Joined:
    Mar 25, 2008
    Location:
    New York
    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?


    [​IMG]
     
  2. Basement_Lurker

    Basement_Lurker One who lurks

    Joined:
    Jun 21, 2007
    Occupation:
    I smash things and demand money.
    Location:
    Victoria, BC
    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.
     
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  4. BAPlumber

    BAPlumber Plumber

    Joined:
    Jul 18, 2007
    Occupation:
    Journeyman Plumber, business owner
    Location:
    Vashon, Washington
    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.
     
  5. hj

    hj Moderator & Master Plumber Staff Member

    Joined:
    Aug 31, 2004
    Occupation:
    Plumber
    Location:
    Cave Creek, Arizona
    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
     
  6. SuperDaddy

    SuperDaddy New Member

    Joined:
    Mar 25, 2008
    Location:
    New York
    Thanks for your help guys, I appreciate it.


    :)
     
  7. bombjay

    bombjay New Member

    Joined:
    Mar 11, 2008
    [​IMG]

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

    SuperDaddy New Member

    Joined:
    Mar 25, 2008
    Location:
    New York
    Excellent. Thanks. I am still tossing around ideas.

    I appreciate the help.
     
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