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joepence
Sep 3, 2008, 06:08 PM
I am putting in a new kitchen. The room used to be a living room. My question is when I put in the plumbing do I have to run a vent stack to the outside of my house or since the house already has a vent will that work? Also I have seen at the hardware store a vent the hooks up under the sink. Would that work for me?

ballengerb1
Sep 3, 2008, 06:36 PM
The vent in the store is an air admittance valve (AAV) and they can be used for sinks but not all codes allow. Will you be submitting for a building permit, if so the inspector will advise you on the AAV. Every drain needs 2 things, a trap and venting.

speedball1
Sep 4, 2008, 05:40 AM
I am putting in a new kitchen. The room used to be a living room. My question is when I put in the plumbing do I have to run a vent stack to the outside of my house or since the house already has a vent will that work? Also I have seen at the hardware store a vent the hooks up under the sink. Would that work for me?
Every fixture that has a trap MUST have a vent. Having said that,if your area allows AAV;s you may install one downstream from the trap, (see image) and be vented. Good luck, Tom

Milo Dolezal
Sep 4, 2008, 03:10 PM
Check with your local Building Inspector. AAV are not allowed in my area.