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Author:
conner172 (MN)
I'm replacing my old galvanized drain pipe with DWV PVC. The galvanized pipe connected vertically to the bathtub drain and then into a sharp 90 degree elbow to pickup the horizontal drain pipe. About 3 feet further along was a p-trap. About 4 inches after the p-trap was a sanitary tee with one end plugged and the other end running into a horizontal pipe which traveled back the way the drain had come from about 3 feet where it ended in a sanitary tee with the other horizontal end plugged and the vertical end picking up the vertical vent. It seems to me this was not code compliant, because the vent goes horizontal below the level of the bathtub drain fitting.
In my planned configuration, I want to put the p-trap right under the bathtub drain/overflow tube outlet, and then pickup the vertical vent 4 inches after the p-trap. The problem is that the vertical vent is located 5 inches horizontally away from the p-trap. In order to pickup the vertical vent, I'd need to place a 45 after the p-trap to begin the bend, another 44 going the other way to straighten the bend, pick up the vertical vent with a sanitary tee or wye, and the repeat the 45 degree bends going in the other direction to realign with the original direction of the drain run. I'm trying to avoid any horizontal vent pipe below the bathtub drain fitting.
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Author:
steve (CA)
Can you post a picture of the existing configuration and a sketch of what you plan to do?
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Author:
conner172 (MN)
It looks like I can only upload one at a time. Here's the existing layout.
Existing
[drive.google.com]
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Author:
steve (CA)
Roll the vent tee/wye 45* and then 45* fitting to go vertical. 45* is considered vertical. The only "wet vent" you have is the vertical section of 4" between the toilet and sink.

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Author:
conner172 (MN)
Thank you! I wasn't aware that a 45* is considered vertical. I thought I had to use the fitting either horizontally or vertically, but could not use it at a 45* angle.
Thanks again!
Edited 1 times.
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