The ABS DWV P-Trap features a union joint and hub x hub connection. The P-Trap provides a water seal so that wastewater will automatically be trapped in the arc of the configuration, thereby preventing unwanted gases from entering the household environment. 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. ABS is lightweight, safe to handle and easy to install. ABS DWV is joined by solvent cementing or threading and can easily be connected to steel, copper or cast iron through the use of transition fittings. Nibco® plastic fittings are backed by a 5 years limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, Nibco® is the preferred brand in the industry.