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Thread: Washing machine drain layout

  1. #1
    DIY Junior Member 1832 farmhouse's Avatar
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    Default Washing machine drain layout

    Hello,

    This is my first post and I hope the pictures come through ok. I am DIYer with a wide knowledge of construction.
    I am moving laundry to 2nd floor while remodeling and want a extra eyes on my layout.
    I current setup is dryfitted together.

    thanks
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  2. #2
    In the Trades Gary Swart's Avatar
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    I can't see for sure, but does the vent go to the outside or is than an AAV? AAV venting may not be OK where you are.

  3. #3
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    Even if the AAV is permitted it must be in a location where it can be serviced.

    John

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    In the Trades Tom Sawyer's Avatar
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    AAV's don't work on washing machine drains. Washer drains are a pressure assisted drain. AAV's only let air in, not out.
    [B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]

  5. #5
    DIY Junior Member 1832 farmhouse's Avatar
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    It is a AAV. I will have a access panel in front of it. I have never heard that AAV's could not be used on washing machines.
    I thought a AAV open and closes?
    would it not work with the pressure that washer machine discharges?

    Thanks

    I have had AAVs installed on previous piping in another home area in my on a drain line.

  6. #6
    DIY Junior Member 1832 farmhouse's Avatar
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    would anyone install a cleanout somewhere in my layout?

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    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    AAV's only open with a negative pressure.

    John

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    DIY Junior Member 1832 farmhouse's Avatar
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    wouldn't there be negative pressure behind the water as it passes down the tee?

  9. #9
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    On a pumped drain such as a clothes there can be a positive pressure caused by the water displacing he air in the line. That will not allow the AAV open.

    John

  10. #10
    DIY Junior Member 1832 farmhouse's Avatar
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    I see. very bummed out right now. Things now means another roof penetration? do they make a vent for my situation that would exit through the wall ?

  11. #11
    Plumbing Contractor for 49 years johnjh2o1's Avatar
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    You could connect it to another vent in the attic.

    John

  12. #12
    DIY Senior Member Smooky's Avatar
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    It might work according to this info . It talks about washing machines starting on page 19 and 27. You do need a vent in the system that vents to the outside.

    http://www.studor.net/documents/Stud...cal_Manual.pdf

  13. #13
    In the Trades Gary Swart's Avatar
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    Nothing says you can't go through the wall and then up with a vent.

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