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

  1. #1
    DIY Junior Member bergmanj's Avatar
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    Default Can a 2" DWV WC vent also be used to vent a 1-1/2" basin drain?

    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

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    TROJAN WORLDWIDE SALES RP MACPLUMB 777's Avatar
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    Yes it can !



    Two bathroom groups with one 2" vent
    Last edited by Terry; 10-29-2012 at 09:54 AM. Reason: added picture

    MACPLUMB 777

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  3. #3
    DIY Junior Member bergmanj's Avatar
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    777,

    Thank you.

    Regards, JLB

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