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krw73 09-21-2010 09:46 PM

Toilet Drain/Vent question
Is this an acceptable or functional layout for my toilet drain/vent system.
3 inch pipe goes straight down into san tee laid horizontal

TheEplumber 09-21-2010 10:38 PM

Not where I work. Vent needs to be downstream from WC

krw73 09-22-2010 07:00 AM

so is it a code issue or will the toilet just not vent properly? or both? In my plumbing book it has a few different options, which of these two would you recommend?
1. put a wye fitting in the horizontal run (downstream side) of the san tee, venting back from the wye.
2. put a wye or san tee in the vertical drop between the toilet and the bend, venting back from, or would this be putting the vent on the upstream side again?

Can I still put a cleanout in the tee where I have the vertical drop from the toilet going into, using either of these two methods.
Thanks for any and all help

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