I will need to replace my 10+ year old garbage disposal (How to repair a slow leak in sink food disposal, at discharge). The mfg help line says the model 17 I have is obsolete and the replacement is the InSinkErator 76944, Cover Control Plus Garbage Disposal
But the recommended replacement is 2.5" wider and 2" taller than the old one.
The existing discharge piping seems very sturdy but may be hard to reuse because there is NOT enough room for the new larger model without relocating that sturdy piping. (See photos below.)
What might be the easiest (or best) way for me to modify the existing piping to accommodate the new, larger disposal? Should I try to use/reuse the 2" metal disposal piping, by moving or modifying it as needed, or replace it with 2" flexible discharge tube like this: https://www.lowes.com/pd/InSinkErator-Flexible-Discharge-Tube-2-in-White-Plastic-Garbage-Disposal-Discharge-Tube/1269327
Will connecting new plastic tube into the wall be easy, since there is a threaded connection (it seems from the first photo), or is that threaded connection likely to be hard to remove since it is old and so close to the wall? In any case, what is the name of the adapter I need to connect the 2" plastic discharge tube to the 2" threaded connection in the wall?
How much of a U shape is needed in the discharge and could that U be made of flexible tubing?
Any tips would be greatly appreciated. (Plumbing is not my thing.)
Best Answer
OK, If you have to remove the copper piping, start with the trap, the "u" thing, which you need to re install with the new piping. Turn the two brass nuts counterclockwise to remove them from the down pipe and the main drain. The threaded fitting at the wall should be able to be removed by turning it counterclockwise with a 12 or 14" pipe wrench. The problem is you might not be able to turn it unless you cut the pipe in half, between the 90 and 45 degree bends. It will depend on the clearances. If you can modify this to make it work, it would be to your advantage. Even try calling your appliance person and see about the size of a 1/2 HP disposal. This will be tricky if you're not a plumbing person.