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    ronanthony's Avatar
    ronanthony Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Nov 17, 2010, 11:26 AM
    Air admittance valve for inside the wall vent termination
    I would like to use an air admittance valve to terminate a 1 1/2 inch PVC vent that is venting a kitchen sink. The location is Queens, NY. Is there any issues with code?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Nov 17, 2010, 04:02 PM

    Hi Ron...

    Air admittance valves (AAV) are not really allowed anywhere, legally. If some city/town/state does allow them it would only be under special circumstances and you would need approval from the local plumbing inspector.

    Living in a state with some of the strictest codes in the country suggests that you won't have much luck persuading the inspector in Queens, NY, but it never hurts to give a quick call over and simply ask him about your options.

    Finally, code approved or not, if you have no vent now and you want to install a vent for now, let's say until you remodel the kitchen down the road, then I say an AAV is better than no vent, OK? Up to you...

    Questions? Let me know...

    Mark

    PS: The AAV must be in under the sink and must remain accessible for future replacement.
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    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #3

    Nov 19, 2010, 06:06 AM

    Air admittance valve for inside the wall
    Mark's correct, You can not install a AAV inside a wall. It MUST be assessable where it can be serviced or replaced. Regards, Tom
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