I need to insert a 1-1/2" tee between two 90 elbows. These are all pressure fittings, not DWV.



The distance between the elbows, or the length of this short piece of pipe is only 2.5". The elbows cannot be raised or lowered, so the 2.5" separation cannot change.

If I use the tee, and replace the top 90 with a street 90 elbow into the top of the tee, I am over by about 1/4". In other words, the top will be 1/4" too high. [UNLESS...I make some modification to the tee by shaving 1/4" off the top AND shave 1/4" off the street end of the elbow - it should work, but not as strong a joint as it can be]

If I replace both the top and bottom elbows with street 90 elbows, I am short and have to either raise the bottom elbow or lower the top elbow, and that doesn't work either.

Thoughts?

replace one of the ells with a side outlet tee

[www.bing.com]

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

so... use two street ells. shave 1/8 inch off each ell and 1/8 off each end of the tee.
i can't believe 1/8 inch is going to make a difference to strength.

Can you install the tee horizontally on its back behind the 2 90’s

If I do not do it in the vertical segment and somewhere else there are other undesirable effects.

Another option would be to replace the two 90's with two 45's, that would give you more lateral distance to install the tee without affecting the vertical height. Not sure if that would work for this application but just an idea. It also removes 90* of bend from the pipe and will improve flow.



Edited 1 times.