"bmac" wrote in message
...
I'm installing a new washer near a sink that used to have a hookup - but
then it was removed several years ago and a new hookup was installed
elsewhere - now, I'm moving it back.
It's downstairs, on a slab. Water heater is behind the sink on the other
side of a wall.
The sink doesn't have a deep basin so I want to plumb directly to the
drain pipe below it. This drain has a 1.5" plug that I'm sure was used
for the older washer's drain. I believe the drain pipe goes directly to
the main drain line.
But, even though whirlpool sells a drain converter for this model (2" to
1.5" or even 1"), I've heard that joining a 2" PVC drain pipe from the
washer to a 1.5" plug can create problems.
Any thoughts? The whirlpool is all about low water use - and I realize
that it's the force with which it drains....but I can't help but think
this isn't going to be a big deal.

So, I'd run the requisite 2" pipe for 6 feet and then convert to a 1.5"
pipe at the drain connection.

Am I going to regret this?


Best to check your local plumbling code.

For washers many jurisdictions now require a minimum 2 inch diameter drain
pipe between 24 and 36 inches in height before the trap.

2 inch into 1.5 inch sounds like sure trouble. Drain pipes are always
supposed to go from small to bigger, not the other way around.

Other choice is to get a deeper utility sink.