Need to replumb under sink for new disposal

[rsmith99]

I am replacing the disposal under my kitchen sink. The new disposal is a littl bigger than the old one and the pipes need to move a little.

The existing drain pipes are 1 1/2" PVC. All glued together.

When I was at the plumbing supply store buying new PVC fittings, a plumber suggested I replace all the 1 1/2" PVC with the smaller, thinner, slip joint fittings to make it easier next time.

I like the idea of easier next time, but it seems it would be better for the sink and the disposal if I kept the drain diameter 1 1/2".

Can I get some opinions on which way to go?

Thanks!
Ron

[Terry]

Another plumber for the thinner PVC with slip joints. It makes it easy to take apart if you need to clean it out too.

[kreemoweet]

The thinner tubular drain pieces are not significantly smaller than PVC in the inside diameter. Unless you have some special need
for the added sturdiness of Schedule 40 PVC, the 1 1/2 in. tubular is the way to go, the flimsier stuff is perfectly adequate
for the job it needs to do, and much more convenient.

[hj]

I have ONLY used the glued together drain fittings in VERY special circumstances. Otherwise everything is done with 1 1/2" tubular.