How to properly add air vent to bathroom pop up drain

Discussion in 'Toilets and Sinks' started by David s, Apr 29, 2018.

Help Support Plumbing Forums by donating:

  1. Apr 29, 2018 #1

    David s

    David s

    David s

    New Member

    Joined:
    Apr 29, 2018
    Messages:
    2
    Likes Received:
    0
  2. Apr 29, 2018 #2

    TomFOhio

    TomFOhio

    TomFOhio

    Professional Professional

    Joined:
    Jan 20, 2018
    Messages:
    991
    Likes Received:
    211
    Location:
    Mansfield,, Ohio
    Show a picture of your set up so we can see how much room you have.
     
    Zanne likes this.
  3. Apr 30, 2018 #3

    David s

    David s

    David s

    New Member

    Joined:
    Apr 29, 2018
    Messages:
    2
    Likes Received:
    0
    Here are more pics .... can increase pipe sizes instead ??
     

    Attached Files:

  4. Apr 30, 2018 #4

    Zanne

    Zanne

    Zanne

    Well-Known Member

    Joined:
    Mar 23, 2013
    Messages:
    1,770
    Likes Received:
    199
    Location:
    ,
    Is that inside a cabinet where people won't see the piping when doors are closed? You may need to open up the wall and look behind it.
    Do you know for certain that there is no vent? Or can you access the plumbing through another wall without breaking the tile?
    If there is no vent, changing the pipe size won't help. You will need to run the trap arm about 4" minimum distance to a vent and could put a vent inside the wall. Or, if you can't add a vent in the wall (and your code allows it) you could add an Air Admittance Valve (AAV) under the sink. Trap arm would still have to be at least 4" long and the AAV would have to be in a place with air circulation that is accessible for when it needs to be replaced.
     
  5. Apr 30, 2018 #5

    TomFOhio

    TomFOhio

    TomFOhio

    Professional Professional

    Joined:
    Jan 20, 2018
    Messages:
    991
    Likes Received:
    211
    Location:
    Mansfield,, Ohio
    I was thinking that the first picture you sent was one of Mr. David's collection that you were showing what yours
    looked like. Chip some of the tile above where it goes into the wall and with a light see if you are going into a
    tee or elbow. If its a tee you probably are vented and an elbow you are most likely not unless this sink is directly
    beside the toilet it could be wet vented.
     
    Zanne likes this.
  6. May 1, 2018 #6

    Zanne

    Zanne

    Zanne

    Well-Known Member

    Joined:
    Mar 23, 2013
    Messages:
    1,770
    Likes Received:
    199
    Location:
    ,
    It looks like it has a dishwasher draining in to it as well. I wonder if that affects the performance.
     

Draft saved Draft deleted

Share This Page

Group Builder