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Old 09-08-2008, 11:49 PM   #1
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Dishwasher Drain - Not by sink

Can someone tell me what the proper connection is for the dishwasher drain if it is not near a sink. I am re-designing my kitchen and the dishwasher will be across from the sink, about 6 feet away.

I was planing on adding in an additional drain line with 1.5" pvc with a P trap on it. The sink has a vent on it, but this drain would not have a vent, I could put one of the self-vent things on this drain if necessary.

I was led to belive that there is something else that needs to be done with a dishwaster that is free standing (seperate from a disposal), but am not able to find what it is.

I read about a stop gap type of valve that some people mention using, but I don't know if that is necessary or if there are other things necessary that I don't know about.


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Old 09-09-2008, 06:22 AM   #2
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Since your sink is vented you will be fine. Remember the dishwasher uses a pump to empty. The Air Gap as I understand is required in most areas of the country but not all.


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Old 09-09-2008, 10:56 AM   #3
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I would use the Air Admittance Valve. When you make up your new drain, install a tee with the side outlet for the DW and also a piece of pipe going up as high as possible with the AAV. Remember, you still want to install the DW drain hose with a high loop in it to prevent the water from being sucked out during the wash cycle. Air Gaps were required a while back but many areas found that they caused more problems than they solved. Food in the discharge caused clogging. Some area still require them though.
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