The NIBCO 3 in. x 1-1/2 in. ABS DWV flush bushing is used in residential and commercial drain, waste and vent systems. The ABS DWV flush bushing features a spigot x hub connection and provides a means for reducing the size of the line. Acrylonitrile-Butadiene-Styrene (ABS) is resistant to a wide variety of materials ranging from sewage to commercial household chemical formulations and can be exposed to a wide temperature span. Color: Black.