On Tue, 14 May 2013 09:43:00 -0500, Karl Townsend
wrote:

I need to install a diswasher drain line into an existing 1 1/2" white
plastic drain line. The line is all glued in place with no give. There
is a place where a foot or so can be cut out but no way to move side
to side.

Surely some part is made to solve this issue. What do I need?

Most are installed in the -downside- of the P-trap, near the vent.
Mine has a short, 3", pipe inserted there with the dishwasher nipple
in it.

TIP:
Be sure to install it with the nipple UP so it doesn't send greywater
back toward the dishwasher. When the checkvalves plug up or go out,
they leak it back into the dishwasher. DAMHIKT.

--
The Road to Success...is always under construction.
--anon