AAV on a laundry sink pump

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Stephen Silver, Jun 4, 2021.

  1. Stephen Silver

    Stephen Silver New Member

    Joined:
    Jun 4, 2021
    Location:
    Lumberton NJ
    Can I use an AAV on a laundry sink ejection pump? Just to be clear, this handles gray water only.
     

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  2. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    No. An AAV is a one way check valve that allows air to flow only into the pipe. As the sump fills with water air has to escape from the tank. As the water is pumped out, then air is needed back into the tank.
     
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  4. breplum

    breplum Member

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    Oct 2, 2004
    Occupation:
    Plumbing and heating contractor
    Location:
    San Francisco Bay Area
    WorthFlorida speaks the truth.
     
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