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    joepence's Avatar
    joepence Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 3, 2008, 06:08 PM
    Kitchen venting
    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's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    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's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Sep 4, 2008, 05:40 AM
    Quote Originally Posted by joepence
    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's Avatar
    Milo Dolezal Posts: 7,192, Reputation: 523
    Plumbing Expert
    		  
    #4

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