Kitchen Island Vent

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by william505, Aug 31, 2005.

  1. william505

    william505 New Member

    Messages:
    4
    We are installing an island in our kitchen and the first plumber we had told us we did not need a separate vent for the island sink. He told us that connecting the island drain to the main drain and vent would suffice (first picture is what he did). I realize we need a cleanout with the drain, which will be installed after the cabinets.

    Now, our new plumber told us we do need to vent the island sink or it "would bubble and have problems draining". However, our new plumber did say he could connect to the vent from the main sink (see picture) which is in the wall (trench already cut in wall to left of window). He told us he would "install an upside "u" with a cleanout for the vent and go back into the floor, through our crawlspace on an upslope and up through the exterior wall to connect the existing vent".

    Which is correct? If we need to vent the island, will the upside "u" be the way to go about it? Finally, can we connect to the existing vent?

    Our state only has a final inspection on a remodel so we want to have it right before they get here. Thanks!

    Attached Files:

    Last edited: Aug 31, 2005
  2. srdenny

    srdenny Plumbing Contractor

    Messages:
    361
    Location:
    SF Peninsula
    [​IMG]


    Search Terry's archives under Island Kitchen Vent. CM's answer is the correct one in areas that don't allow AAV's.
    Last edited by a moderator: Sep 8, 2005
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,247
    Location:
    Cave Creek, Arizona
    vent

    The upside down "U" would be the way to vent it, but it takes more than just that and a pipe to a nearby wall.
  4. william505

    william505 New Member

    Messages:
    4
    Search found no results

    Thanks for your help but when we searched for kitchen island vent or any combo thereof we found no results.

    Who is CM?

    Can you provide a link to this post?
  5. william505

    william505 New Member

    Messages:
    4
    Besides a cleanout what else?
  6. PEW

    PEW DIY Senior Member

    Messages:
    487
  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,247
    Location:
    Cave Creek, Arizona
    vent

    A "foot" connection to the drain from the vent, a cleanout in the vent riser in the wall, a properly sized, (2"), vent line under the floor.

    [​IMG]
    Last edited by a moderator: Jan 26, 2012
  8. william505

    william505 New Member

    Messages:
    4
    Thanks gentlemen!
  9. studor vent???

    I dont know where you live but in the mid-west
    an auto air vent is ok under a kitchen sink

    they are called studor vents, aout air vents

    it might be ok for your area,

    it sounds like you canned the first plumber

    but he still might have been correct about this..



    we use them all the time

    http://www.oatey.com/aav_public/index.html
Similar Threads: Kitchen Island
Forum Title Date
Plumbing Forum, Professional & DIY Advice Question on Kitchen Sink Island Rough In Jul 2, 2014
Plumbing Forum, Professional & DIY Advice Possible vent issue on a kitchen island with kitchen sink in it Feb 2, 2014
Plumbing Forum, Professional & DIY Advice Installing a loop island vent from kitchen down to basment? Mar 19, 2013
Plumbing Forum, Professional & DIY Advice Kitchen Island rough-in Dec 17, 2010
Plumbing Forum, Professional & DIY Advice Can anyone help identify this kitchen faucet? Dec 6, 2014

Share This Page