I'm new to the forums as a "poster" though I've learned much from reading about plumbing issues here in the past. I am adding a new kitchen island with a 2" PVC drain and AAV. I plan to connect to existing 3" horizontal drain using PVC WYE 3x2x3 fitting. My questions is: does the IPC allow use of 3" PVC repair couplings on both ends of the WYE? This fitting will be below existing floor and above a finished basement ceiling.
I believe I read that IPC does not allow no-hub or Fernco in finished space unless a access panel in provided (could not find any reference other than "welded connections"). My preference is to use the repair couplings, if allowed by IPC. Thanks for any insight!