Under a hand rinse sink (one DFU) I need to install a "close elbow" in order to hide the plumbing from view. The sink is on a slim counter and they don't want to see the pipes under the counter. The plan is to send the waste straight back to the wall, immediately after it drops through the counter.
So there would be a tight turn, not a long sweep.
Luckily, I have room in the cupboard before the wall, to put an air intake so the pipe can grab some air (or let some out) before the P trap. Like an air gap.
This application is like the kits sold for wheelchair access. I notice that the big manufacturers all sell a close elbow kit, for $100, and just to get a single component of the kit costs $100 too!
The little drawing might illustrate well what I am thinking.
Since the sink has an overflow, and the waste line has an air intake, I am thinking that this whole setup will drain well. Is this the best compromise?
What say you?