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  1. #1
    James Duffin's Avatar
    James Duffin Guest

    Default Dishwasher Drain

    Saw this setup for a dishwasher drain today. The copper pipe is coming in from the right is from the dishwasher.

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  2. #2
    Join Date
    Feb 2009
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    Southern Vancouver Island
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    Default Re: Dishwasher Drain

    I think you'd call that a 'low loop'. Good variety of materials too. I like the cleanout.

    John Kogel, RHI, BC HI Lic #47455
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  3. #3
    Join Date
    Jul 2007
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    Default Re: Dishwasher Drain

    Is that going up hill after the trap?


  4. #4
    Tom Thompson's Avatar
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    Default Re: Dishwasher Drain

    Very nice indeed where should I start?

    IAPMO states: Installation instruction and local plumbing code will dictate the requirements. Most installation instructions require drain connections to be minimum 20" above the floor level of the dishwasher.

    Last edited by Tom Thompson; 06-07-2011 at 05:03 PM.

  5. #5
    James Duffin's Avatar
    James Duffin Guest

    Default Re: Dishwasher Drain

    Quote Originally Posted by Bob Elliott View Post
    Is that going up hill after the trap?
    Yes it is going up rather than down.


  6. #6
    Phil Brody's Avatar
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    Default Re: Dishwasher Drain

    OK it's silly and wrong but with the exception of being able to clean out the black trap I don't see anything functionally wrong. The uphill run is the smartest thing they did !


  7. #7
    MARVIN TOWNSEN's Avatar
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    Default Re: Dishwasher Drain

    Sheeet thats loocs likes how wees plombs tings aroond hear


  8. #8
    Join Date
    Nov 2007
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    Default Re: Dishwasher Drain

    Quote Originally Posted by Phil Brody View Post
    OK it's silly and wrong but with the exception of being able to clean out the black trap I don't see anything functionally wrong. The uphill run is the smartest thing they did !
    No its not, that would be against plumbing codes. The whole mess is wrong. No venting, also the fact the dishwasher would be the lowest point in the plumbing system so when the sewer backs up you will get raw sewerage in your dishwasher. thats tasty


  9. #9
    James Duffin's Avatar
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    Default Re: Dishwasher Drain

    Here is a picture of the drain downstream from the first picture. It has a little hump in it about midway.

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  10. #10
    Join Date
    Mar 2007
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    Chicago, IL
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    Default Re: Dishwasher Drain

    Often, when I see this type of install, it also violates the manufacturer's limitation on the length of the drain line, which is typically 10'.

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