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Thread: What is it?

  1. #1
    Join Date
    Dec 2007
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    Holladay, UT
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    Default What is it?

    Found this at inspection today and I have never seen this before. At the top of pipe off of disposal this was screwed on, you can see the threads at top of white pipe. It has a clear plastic diaphragm on top. Also the kitchen sink was on an island and where I would expect to see a mechanical vent there is a rubber cap. What is going on?

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    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  2. #2
    Chuck Moeschberger's Avatar
    Chuck Moeschberger Guest

    Default Re: What is it?

    Quote Originally Posted by Tom Rees View Post
    Found this at inspection today and I have never seen this before. At the top of pipe off of disposal this was screwed on, you can see the threads at top of white pipe. It has a clear plastic diaphragm on top. Also the kitchen sink was on an island and where I would expect to see a mechanical vent there is a rubber cap. What is going on?
    Looks like a handyman mess to me. I was a pipe fitter for 3 years and we found things like this sometimes. It doesn't serve a purpose if you ask me.


  3. #3
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
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    Default Re: What is it?

    You've got two problems shown there, one where the incorrect drain piping is connected to the disposer and the other where there should be an AAV, which looks like someone removed it and capped off the top of the VENT, which means that sucker ain't gonna vent like it should.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  4. #4
    Join Date
    Dec 2007
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    Holladay, UT
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    565

    Default Re: What is it?

    Jerry, Have you seen this diaphragm thing before?

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  5. #5
    Join Date
    Mar 2007
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    Ormond Beach, Florida
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    Default Re: What is it?

    Quote Originally Posted by Tom Rees View Post
    Jerry, Have you seen this diaphragm thing before?
    Tom,

    Yes ... sort of ...

    In your second photo, see that white slip fitting nut with the two wings on it to allow tightening it (some slip fitting nuts do not have the wings on them), now take a scrape piece of copper or steel, maybe even the cut out top of a soup can, use a hammer and pound it down into that slip nut, and ...

    You'll have a matching white nut with diaphragm.

    That piece is a tailpiece/tailpiece extension with a side inlet for another line, in this the disposer is connected into it. Notice, though, that the connection is a slip joint fitting - the discharge pressure from the disposer 'could' push the slip fitting and nut off the end of the disposer discharge ... makes a big mess when that happens.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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