Vent for Bathroom Sink

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by jdanz79, Feb 18, 2010.

  1. jdanz79

    jdanz79 New Member

    Joined:
    Nov 24, 2009
    Location:
    Albany, NY
    Can I have my vent come up right over the drain, make a turn then go down to the 4 inch main stack/vent? Does the vent need to be sloped up on its way to the main vent? If so, what tee do I use at the junction between drain and vertical part of vent? (sanitary tee) Also, if my sink is within 4 feet of the main do I need a vent ( I think yes ).
     

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  2. dcelite

    dcelite Plumber

    Joined:
    Oct 5, 2009
    Occupation:
    Plumber
    Location:
    Los Gatos, CA
    The vent is not supposed to be back graded towards the stack. Also, the vent needs to be within 42" of the p-trap, and the vent should tie in at least 6" above the sink rim.
     
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