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Thread: Sizing for Washing Machine Vent

  1. #1
    DIY Junior Member RoseHawke's Avatar
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    Jun 2007
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    Default Sizing for Washing Machine Vent

    Good day ! I have a very specific question. I am moving my washing machine from one side of the room 12' away to the other (so it'll be next the dryer.) Currently it has a 2" drain (standpipe) and shares a vent with the kitchen sink. For the new setup should the new vent be 2" also?

    Thank you!

  2. #2
    Commercial Plumber markts30's Avatar
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    Sep 2006
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    For a washer, you should only require a 1 1/2" vent - but a 2" drain....

  3. #3
    Plumbing Designer FloridaOrange's Avatar
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    New codes in Florida require a 3" sanitary to a 2" trap, a 1-1/2" vent is acceptable. If you are going to have it inspected you might want to verify the sanitary size to the trap.
    Matt
    Semi-professional plumbing designer
    Enjoying life in SW Florida

  4. #4
    DIY Junior Member RoseHawke's Avatar
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    1.5 sounds fine. That's what I needed to know. Thanks!

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