garage sink questions

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by RAS, Aug 1, 2012.

  1. RAS

    RAS New Member

    Jul 31, 2012
    Lake Zurich, IL
    Hello all,

    I want to install a utility sink into my garage. I live near Chicago, IL so yes, we do have freezing temps. My garage has bedrooms above it so the garage is fully insulated and drywalled (ceiling and all walls). The garage is not heated but my neighbor has a garage sink so I figure I love to have one if I can install it safely. This sink right now is in the house next to the garage but crammed into a closet and difficult to get to. I believe that this sink drain is not tied into any other plumbing whatsoever. It does drain into the basement ejector pit which is where it probably drained when it was originally installed in the basement. previous owner had it moved to the main floor closet.

    My questions are...

    1. Should I place the hot/cold shut off valves facing to the interior- on the warm side of the insulation? I will install an access panel of course. Do I even need shut-off valves near the sink for code? or can I place 1/4 turn ball valves just below in the basement?
    2. AAV safe to use? Can I install it as shown- so long as I have access to it. I am still hunting for an actual vent but so far cant get to it.


    Attached Files:

  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    The shutoffs (ball valves) for the water can be in the basement.
    The AAV needs a ventilated access.
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  4. mikeplummer

    mikeplummer Plumber

    Mar 28, 2012
    Ontario, Canada
    depending on your code, i don't believe the aav can be in an insulated wall....should be min 6" above insualting materials
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