Plumbing – Garbage Disposal / Plumbing Dilemma

garbage-disposalplumbing

I just purchased a new garbage disposal.
The current plumbing will not allow the new disposal to fit in place.
The main sewage line with a wye is in the way and I need to replace it.
This is a single sink single trap set up.

Questions:

  1. what is the best way to do this (see picture)
  2. Can I cut the wye pipe just before the base and then use a saw of some sort to cut the remaining flange around the bottom?
  3. Or, should I just cut the whole wye pipe out and install a new one?

enter image description here

Existing PVC Connection

Best Answer

Anything could be possible. The benefit of the wye, the way it is setup, is for cleaning. If you don't forsee any future problems with cleaning, I would cut it out, and use a threaded set of pipes. This way you can still remove the pipes if you need to clean it out and if you need to make any adjustments to the drain, this will make it easier to do. Once you figure out the height needed for the disposal, you can re-plumb the drain. But make sure you still have room for your p-trap setup.

Also, is this a single sink or a double? Perhaps if a double sink, have you thought about reversing the drain and disposal setup?

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