THE TURBOVENT AIR ADMITTANCE VALVE with a 1½"-2" HUB X FIP combo adapter is now available in either ABS or PVC. The adapter is designed to fit over 1½" or 2" DWV pipe. The valve meets ASTM 2665 and ...
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.
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