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  1. #1
    Join Date
    Mar 2007
    Location
    Knoxville, TN
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    2,446

    Default Two air check valves?

    Any idea why someone would put to air check vents under a kitchen sink?

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  2. #2
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    Default Re: Two air check valves?

    Maybe it's DIY and the homeowner originally had one valve and thought it was noisy or not venting well enough so he's trying two? Just speculating. Sounds like something I'd do.

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  3. #3
    Join Date
    Feb 2009
    Location
    Southern Vancouver Island
    Posts
    4,546

    Default Re: Two air check valves?

    I'll bet the trap was clogged with bacon fat and the first air valve didn't fix it.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  4. #4
    Join Date
    Mar 2008
    Location
    Charlotte NC
    Posts
    2,303

    Default Re: Two air check valves?

    It's a double bowl sink!

    The beatings will continue until morale has improved. mgt.

  5. #5
    Join Date
    Mar 2007
    Location
    Columbus GA
    Posts
    3,746

    Default Re: Two air check valves?

    "Any idea why someone would put to air check vents under a kitchen sink?"

    Because there's not enough room for 3.

    ' correct a wise man and you gain a friend... correct a fool and he'll bloody your nose'.

  6. #6
    Join Date
    Mar 2007
    Location
    Philadelphia PA
    Posts
    3,177

    Default Re: Two air check valves?

    Quote Originally Posted by Rick Cantrell View Post
    "Any idea why someone would put to air check vents under a kitchen sink?"

    Because there's not enough room for 3.
    Dang. Why couldn't I have thought of that?

    "There is no exception to the rule that every rule has an exception." -James Thurber, writer and cartoonist (1894-1961)
    www.ArnoldHomeInspections.com

  7. #7
    Join Date
    Nov 2007
    Location
    Chicago
    Posts
    548

    Default Re: Two air check valves?

    Here is a good link to see if your state approves a mechanical vent. STUDOR (R) inVENTive Technology (TM) - Air Admittance Valves


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