Kitchen Drain Pipe After P-trap Goes UP?? - Plumbing - DIY Home Improvement | DIYChatroom

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Old 11-08-2008, 10:23 PM   #16
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Oh man, that upward angle does not look right....


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Old 11-08-2008, 11:59 PM   #17
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Well GeeWhiz its just like I said....its a screwed up monstrosity. But then again, what the heck would I know? You've got one helluva case of backfall after the trap which is causing it to clog. It may have drained but as I stated previously it wasnt draining correctly. In fact, it wasnt actually draining at all. The water was being forced out by the head pressure (also stated previously). You'll ALWAYS have clogs there because it isnt plumbed correctly. Of course, you can take the RR "plumber's" <cough hack gag> advice and let it go since he said it was ok or you can actually fix it.

Last edited by JDC; 11-09-2008 at 12:09 AM. Reason: too much sarcasm in previous posting
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Old 11-09-2008, 12:36 AM   #18
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Originally Posted by thekctermite View Post
Someone really screwed that up, didn't they! The rough-in at the wall was brought out at the wrong height.
But the height looks fine if there was no disposal, right?

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Old 11-09-2008, 01:49 AM   #19
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Originally Posted by pmracing View Post
But the height looks fine if there was no disposal, right?
Yup, but that is probably little consolation, because they probably want to keep the disposal.

The solution is to cut into the wall and cut into the pipe a few inches lower. No other way around it. It would be an easy project, just gotta make a good-sized hole! The existing wye fitting would need to be cut out and that section of the vertical pipe would need to be replaced, as it is more than likely a vent above the trap arm.
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Old 11-09-2008, 04:14 PM   #20
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Kitchen drain pipe after P-trap goes up??

No need to cut out the original elbow if you install a new one lower down. Just cap it off. The vertical portion needs to remain as a vent.


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