Does NY code allow for the venting of a kitchen island sink via air admittance valve similar to the one shown here as option 2.

http://www.familyhandyman.com/DIY-Projects/Plumbing/Kitchen-Plumbing/how-to-plumb-an-island-sink/Step-By-Step

Thanks!


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  1. That raises the question how to achieve free-standing (not connected to any wall) kitchen islands with sinks in NYC. How is this done?

    Thanks!