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Your kitchen sink should already be vented if there is a p-trap draining to the wall. if it is an s-trap it is not vented and not to present code requirements. The dishwasher drain goes into the side of the disposal and the disposal should drain to the trap. A separate vent is not required for the disposal or dishwasher as the trap for the sink is what requires a vent.

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Q: Do you need an air vent installed for the dishwasher and garbage disposal and if so can it be installed another way if needed?
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Related questions

Is it ok to run the garbage disposal when the dishwasher is running?

Yes. Your dishwasher discharge hose is probably hooked into the side of the disposal. Running your disposal will not hurt the dishwasher.


Can a dishwasher and garbage disposal be on same circuit?

Of course


Do you to have a garbage disposal with a dish washer?

You can have one or both. If you have a disposal, the dishwasher usually empties into it. This helps keep the disposal clean and any food particles from the dishwasher get chopped up. Any home can have a dishwasher, but if your home is on a septic system, a garbage disposal is distinctly discouraged.


does the outlet for the dishwasher have to be on the same side of the garbage disposal drainage outlet?

Yes the outlet for the dishwasher should be on the same side as the disposal,so the disposal can handle the waste water from the dishwasher.


Where does the drain on a dishwasher go?

Garbage disposal, if one is installed, or a wye branch fitting on the tail piece of sink drain. Dishwasher drain line should have an air break or air gap before the disposal or wye branch fitting.


Can a garbage disposal be on when a dishwasher is on?

Yes, they should be on separate breakers.


Can you run the dishwasher if the garbage disposal is not connected?

The disposal has to be in place so that the drain on the dishwasher is connected. If you do not have a disposal or are removing it, there is a extension tube for the drain that has the dishwasher tube in it. The disposal does not have to work for the dishwasher to drain. The water is run through the disposal so that any food particles get ground before going in the drain. After a while, the disposal will begin to smell if it is not run.


Can a garbage disposal be installed on an under mount sink?

yepp!


How do you connect a dishwasher without a garbage disposal?

A fitting made specifically for dishwasher that goes in drain line under kitchen sink.


Why does your garbage disposal back into the dishwasher?

The sink drain is blocked somewhere after the disposal. take apart and clean or renew sink drain.


The water from the air gap flows onto the counter and over the side is there a gadget that guides all of the water into the sink?

If the tubing between dish washer and garbage disposal unit is newly installed then someone forgot to remove a plug. If it was working before then the flow from dishwasher to the garbage disposal is too slow resulting in this.


How do you cap a garbage disposal that you have disconnected a dishwasher from?

Fit a short length of capped hose to the disoposal fixture.