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    diycanada's Avatar
    diycanada Posts: 8, Reputation: 1
    New Member
    		  
    #1

    Feb 5, 2011, 02:24 PM
    Installing sink in basement
    I am installing a sink in my basement and want to tie into the drain from the sink above. However, I am unable to tie into the existing vent for the main floor kitchen sink. Can I install an aav onto the horizontal drain pipe on the basement sink inside the sink cabinet. The horizontal pipe is 5 feet long before it ties into the main kitchen drain. Any diagrams I have found show the aav installed on the vertical drain pipe with a T I would not be able to add the aav on the vertical kitchen drain because it is behind the wall.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Feb 5, 2011, 02:34 PM

    AAVs are always installed in a horizontal position. They can be on the horizontal pipe or at the top of a verticle pipe which drains down. How to Install an Air Admittance Valve | DoItYourself.com
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #3

    Feb 5, 2011, 04:31 PM
    No problem here... ;) See images.

    As long as the AAV is under the cabinet and "readily accessible" for future swap out should the AAV fail then it can go on the vertical or the horizontal as in my pictures.

    Questions? Let us know, OK?

    Mark
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    diycanada's Avatar
    diycanada Posts: 8, Reputation: 1
    New Member
    		  
    #4

    Feb 6, 2011, 07:02 AM
    Comment on massplumber2008's post
    Thanks so much. The picture of the horizontal is great.
    diycanada's Avatar
    diycanada Posts: 8, Reputation: 1
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    #5

    Feb 6, 2011, 07:02 AM
    Comment on ballengerb1's post
    Thanks for the link
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