Dishwashers in this part of the US have a vent in the drain line. The
vent is at counter height, between the dishwasher outlet and the sink drain.

Several people I know have removed this vent and connected the
dishwasher outlet to the sink drain, just above the trap.

Question: what is the purpose of this vent?

Thanks.

- Bryan

Bryan wrote in :

Dishwashers in this part of the US have a vent in the drain line. The
vent is at counter height, between the dishwasher outlet and the sink
drain.

Several people I know have removed this vent and connected the
dishwasher outlet to the sink drain, just above the trap.

Question: what is the purpose of this vent?

Thanks.

- Bryan



It's above the sink height, so when you drain the sink it doen't fill the
dishwasher.

Bryan wrote in message ...
Dishwashers in this part of the US have a vent in the drain line. The
vent is at counter height, between the dishwasher outlet and the sink drain.

Several people I know have removed this vent and connected the
dishwasher outlet to the sink drain, just above the trap.

Question: what is the purpose of this vent?

Thanks.

- Bryan

Hi,

Some plumbing codes still require the air gap in the drain and some do
not require it. The air gap basically prevents water from flowing
backwards.

http://www.repairclinic.com/referral.asp?R=153&N=474608
Air Gap Kit prevents back-siphoning of contaminated water from your
food waste disposer, drain or sink into the dishwasher.

jeff.
Appliance Repair Aid
http://www.applianceaid.com/

Thanks! Exactly the information I was looking for.

- Bryan

jeff wrote:

Some plumbing codes still require the air gap in the drain and some do
not require it. The air gap basically prevents water from flowing
backwards.

http://www.repairclinic.com/referral.asp?R=153&N=474608
Air Gap Kit prevents back-siphoning of contaminated water from your
food waste disposer, drain or sink into the dishwasher.

jeff.
Appliance Repair Aid
http://www.applianceaid.com/

Bryan wrote in message ...
Thanks! Exactly the information I was looking for.

- Bryan

Your welcome!!

jeff.
Appliance Repair Aid
http://www.applianceaid.com/