Milky-G wrote:

I've installed a dishwasher in a new cabinet and countertop section in my
kitchen and need help with addressing proper drainage. It's not near the
sink. I have the drain loop running up and around the washer, but the
existing drop is just above the floor and runs straight down into the
basement. This creates a siphoning after the initial wash, so when it
refills for the rinse, the water keeps siphoning out. Obviously, I can't
install the typical air gap that's used on sinks because I can't risk any
backup flooding under the cabinet section. I've heard something about using
a "Y" connector type air gap that connects near the floor but runs up the
wall and is capped off with, I'm guessing, a filter that only passes air (or
maybe it's some kind of one-way valve or ball frit?). Is anyone familiar
with setting this up or does anyone have any advice on how to make my
current setup work correctly? I've seen dishwashers installed in kitchen
islands with no sink, so there must be a common way of connecting this
properly.

Thanks.



You can use an auto-vent device:
http://www.plumbingsupply.com/autovent.html

But first.... Is there a P-trap in the basement where
you are connecting in to? If not, you have a bad situation.
Without a trap, there is always the possibility of sewer gas
exiting the dishwasher.

Even if the sink is a long distance away, I would route the
drain to the sink trap (inlet) or to the disposal (if present).

Jim