See anything wrong with this laundry standpipe


Old 11-30-19, 11:43 PM
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See anything wrong with this laundry standpipe

I had a plumber put in a standpipe for my washer, the left vertical pvc pipe has a studer valve on top.

Curious if anyone else see something wrong with how this is configured.


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Old 12-01-19, 03:47 AM
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Is this a trick question?

Looks OK to me.
The real question is "Does it work OK?"
Old 12-01-19, 05:41 AM
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Looks funny, but nothing is wrong. It's trapped and then goes into a vertical drain. If there was a wall right after the trap as it enters the wye, you would not question it. I think because it twisted for alignment purposes makes it look odd.
Old 12-01-19, 07:39 AM
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Is the air admittance valve (AAV) out in the open or buried in the wall cavity? It cannot be concealed because they do fail and need to be replaced occasionally. If it's inside the wall cavity there should be an access panel so you can service it in the future.
Old 12-01-19, 10:42 AM
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I would have used a San Tee instead of a Wye, but I believe the Wye is acceptable. The AAV may or may not be allowed, check with your AHJ for details.
Old 12-01-19, 04:41 PM
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CasualJoe: I agree.

I believe the wye fitting restricts vent air, and I don't think he had the min of 4inch run.


Old 12-03-19, 06:25 PM
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I assumed you were concerned about the 'twisting' of the trap. No issue there. It looks odd, but totally normal.

I've never heard an issue with a combo wye used in that position... but I too would have used a sanitary tee by default. Maybe I'm just not familiar enough with the DWV patterns.
Old 12-03-19, 07:19 PM
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Thats considered a long sweep and change of direction. Its OK. with a san tee you need some inches of pipe to the san tee. with a st fitting in a wye it becomes a long sweep.

Were are you that you follow the UPC?

IPC says.


Zorfdt voted this post useful.
Old 12-08-19, 12:33 AM
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That's not really a change of direction, it's where a drain, vent and trap arm to a p-trap meet. It should be a tee.

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