Can a 2" DWV WC vent also be used to vent a 1-1/2" basin drain?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by bergmanj, Oct 29, 2012.

  1. bergmanj

    bergmanj New Member

    Messages:
    2
    Location:
    Duluth MN
    Folks,

    Brand new poster here.

    Spouse and I are building a new retirement residence.

    I'm doing the DWV work.

    Can a 2" DWV WC vent (PVC - all the way to attic vent manifold) also be used to vent a 1-1/2" basin drain (combined into from basin 6+ inches above basin flood rim)? Or, must the basin vent be run seperately to the attic vent manifold (4")?

    Regards, JLB
  2. MACPLUMB 777

    MACPLUMB 777 TROJAN WORLDWIDE SALES RP

    Messages:
    679
    Location:
    Houston, Texas, United States
    Yes it can !

    [​IMG]

    Two bathroom groups with one 2" vent
    Last edited by a moderator: Oct 29, 2012
  3. bergmanj

    bergmanj New Member

    Messages:
    2
    Location:
    Duluth MN
    777,

    Thank you.

    Regards, JLB
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