Inlet 90 below toilet not allowed

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i4ni

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I'm no plumber but I believe a 90 with a back inlet below a toilet is not allowed. Am I correct?
 
Not sure what you mean by a back inlet.
A low heel outlet 90 after the closet bend 90 is pretty common with the 2" in a vertical or not more than 45 degrees from the vertical position.

If you mean installing a 3" x 2" low heal outlet directly below the toilet with the 2" outlet horizontal with the 3" turn, then no you can't do that.

draw a picture of what you mean if that doesn't clarify.
 
If you mean installing a 3" x 2" low heal outlet directly below the toilet with the 2" outlet horizontal with the 3" turn, then no you can't do that.



That's the answer I was looking for. Thanks . IS a side inlet 90 in that same scenario allowed?
 
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Honestly, In 30 yrs I have never seen a side inlet 90 until I just went and looked for one. I have seen side inlet santee. The toilet drops into a 90 before it turns horizontal to the santee. The run of the santee is vertical with the side inlet picking up the tub/shower drain.

Someone else was asking a similar question on another forum but got no answers. He had a lead drain with a side inlet vent. A chart I found saw you CANNOT use the side inlet as a vent. That would be something I would check with local codes. That side inlet can become easily fouled and probably not a good way to pipe it.

If it because you want to reconnect a vent like the did in the the lead pipe replacement the you are better off installing a 3X2 wye just after the bend. Roll the wye up to 45 from horizontal and make your connection there.

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I have been using side outlet tees for over 30 years
And have not had any problems with the tee being clogged
the tub washes the vent
only problems I have seen are ptraps full of hair

back to back

I threw in that side inlet tee as an example of what I have seen.
But have you ever used a side inlet 90 like the last to pictures where the WC dumps into the 90. I think that is the OP original question.

Not really sure what his intention are.
 
I threw in that side inlet tee as an example of what I have seen.
But have you ever used a side inlet 90 like the last to pictures where the WC dumps into the 90. I think that is the OP original question.

Not really sure what his intention are.

I have never used any 90's with inlets,
 
The reason for my inquiry is I have a bath that was roughed in with the low heel inlet 90 directly below the toilet with the tub drain line to connect horizontally to the 11/2" low heel inlet. This bath never had fixtures installed and never was hooked up to the live sewer plumbing in the house. This was roughed in maybe 10 years ago so I don't know if the code changed in that time or because of lax code enforcement the plumber took the easy route for the tub connection. Now I'm planning on using this bath so I have to decide to bring it up to code or use as is. In this county at that time (2007) no permit was required thus no inspection at that time. I'm not obligated to get a permit now either because I'm only installing the fixtures. So do I bring it up to code now or not worry about it? That's what I need to decide.
 
If you mean something like this? No ! You definitely do not want to do that.
Toilet can foul the tub drain

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