Did I say patching the hole in my wall was the last engineering hurdle for my kitchen? Well, in fact, I had plenty this weekend. My original sink was about 75% of the size of the new one. My new sink, in addition to being wider in the front-to-back dimension, is also an inch deeper than the previous one. And, it’s an undermount whereas the previous went on top of the countertop. So my installation of the new garbage disposer with the new sink faced two problems: the old waste line plumbing was too tall to mate with the much lower discharge side of the disposer, and, more annoyingly, was two inches too short to reach the unit.
I decided to tackle problem number two first. After a half hour spent rummaging through Lowes’ selection of PVC thingys, I found a good approximation to the discharge tube of the disposer, but without the 90 degree bend, and I also grabbed a 90 degree elbow. This is not schedule 40 PVC; it’s really flimsy plastic stuff, but it’s a good match for the tube that came with the disposer. I did the obvious thing: instead of bending after one inch, I fashioned a tube that travelled horizontally three inches before turning downward into the waste pipe. It lined up well with the existing waste line.
So the height now needed to be solved. I took a hacksaw to the existing schedule 40 PVC line, before I realized that did no good. I’d have to replace the whole P-trap since the previous stuff was solvent welded. I then intended to just detach the existing U segment of the trap and put a new one on. However, I soon discovered that the old traps had the nut on the top whereas newly made ones have it on the bottom. F-bomb.
The only avenue now available (I’d already cut the U segment in half in a misguided effort to get it off) was to do what I should have done in the first place. I cut the old waste line just before the old trap and decided to extend the line two inches and put a new trap on, to solve both problems at once. A vigorous bit of hacksawing, a coupler, two cuts of PVC pipe with the table saw, a near-vomit-inducing bout with PVC primer and cement fumes, and a waste line adapter later, and I had the original disposer tubing connected to the waste line. For the first time since August my kitchen has running water again. Yay!