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Old 12-23-2014, 03:45 PM   #1
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Bathroom 1.5" vent tie into 2"


I am tying in the vents for my basement bathroom addition. I have the 1.5" vant from the sink/lav tying into the 2" vent from the shower drain.

Is it ok to use a san Tee on its side to join the 1.5inch into the 2 inch?

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Old 12-23-2014, 03:57 PM   #2
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Bathroom 1.5" vent tie into 2"


Be sure to tie in above flood level on main floor

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Old 12-23-2014, 05:34 PM   #3
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Bathroom 1.5" vent tie into 2"


Yes as long as your are 6 inches above the highest fixture on that floor. Normally 42 inches is a good starting point.
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Old 12-23-2014, 07:39 PM   #4
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Bathroom 1.5" vent tie into 2"


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Originally Posted by Ghostmaker View Post
Yes as long as your are 6 inches above the highest fixture on that floor. Normally 42 inches is a good starting point.
Yes, both the 2" and the 1.5" vent lines are running along the top wall frame of two perpendicular walls. So they will tie together at the corner before makeing the turn up to the main level floor joists.

I have a 2"x2"x1.5" wye, so I could use the why&a 45' to join the corner. (hope this makes sense)...

Using the 2"x2"x1.5" san-Tee just keeps the lines closer to the framing and will make for a cleaner install. So if thats ok... I will just run with that configuration.
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