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-   -   Venting for a washer. (https://www.askmehelpdesk.com/showthread.php?t=28146)

  • Jun 22, 2006, 06:47 AM
    jessechenven
    Venting for a washer.
    I would like to add a washer hook-up in a utility room that I have. It is on the 1st floor of a 2 story home. Directly above it is a bathroom, so I have hot and cold water lines in the wall. As well as two waste pipes (a 3" from the toilet and a 2" from the sink/shower). I am assuming it is a no-no to just hook-up to the waste pipe because that would not allow for proper venting. Is that correct? What are my options (besides ripping out tons of drywall, tile and roofing to put in a new vent)? What about trailer-home one way vents (*just heard about them, never seen one)?

    Thanks,
    Jesse
  • Jun 22, 2006, 07:42 AM
    speedball1
    Quote:

    Originally Posted by jessechenven
    I would like to add a washer hook-up in a utility room that I have. It is on the 1st floor of a 2 story home. Directly above it is a bathroom, so I have hot and cold water lines in the wall. As well as two waste pipes (a 3" from the toilet and a 2" from the sink/shower). I am assuming it is a no-no to just hook-up to the waste pipe because that would not allow for proper venting. Is that correct? What are my options (besides ripping out tons of drywall, tile and roofing to put in a new vent)? What about trailer-home one way vents (*just heard about them, never seen one)?

    Thanks,
    Jesse

    Hi Jessie,

    http://www.studor.com/ gets you to a site to check out AAV's,( Air Admittance Valve.)

    Since garbage disposals I don't recommend discharging a washer and kitchen sink on the same line.
    Cut into the3" stack about 6" off the floor to at he center of a 3 X2" sanitary tee. Come off the sanitary tee with a 2" upright tee. Install a AAV on the upright branch of the 2" tee and a 2" trap on the other side. Now run a 2" standpipe up from the trap to one inch higher then the rim of the washer.
    You have just cimpleted the drainage and vent for your washer. Good luck. Tom
  • Jun 22, 2006, 09:33 AM
    jessechenven
    Thanks Tom,
    Do you ever need to woory about flooding with the AAV, if for example you had a seriously clogged drain?
    Thanks, Jesse
  • Jun 22, 2006, 09:39 AM
    speedball1
    As you can see by the image the AAV is spring loaded and remains closed until it opens to vent.

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