The ABS DWV 90 elbow features a hub x hub connection and is used to change the direction of flow. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. 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 DWV is joined by solvent cementing or threading and can easily be connected to steel, copper, or cast iron using transition fittings. Color: Black.