What is the best way to add a vent?
I have never seen one of those for sale before.
Does it have to be on the kitchen sink?

I also have the option to tie into the drain line for the laundry sink.
It is next to the washer.
The gurgle won't be a problem there.


Speedy Jim wrote:
hombrewdude wrote:

My old machine was routed direct to the laundry sink.
I bought a new machine, and I want to get the plumbing out of the
sink..

All of my drain pipes in my 30yr old house are 1-1/2" ABS

My kitchen sink drain runs directly behind my washing machine
Sink is upstairs, machine is in the basement.

so...

I plan on adding a 1-1/2 tee near the floor
Off the T a p trap
Off the p trap a standpipe - taller then the washer machine
Then attach the washer machine hose to the top.

Any problems with this?
I have read I should have 2" drain pipe. but all of my pipe is 1-1/2"


It won't be "correct". The new trap will not be vented
and waste flow from above can suck the trap dry.
You *could* add a mechanical vent to the new trap.

If the kitchen trap doesn't have a vent, it will
surely gurgle when the washer empties.

Jim