The 90-degree elbow features a push-to-connect end and female NPT thread. These fittings provide a means of changing the pipelines direction 90 degrees, as well as adapting from a push connection to a threaded connection. Please refer to NIBCO technical data sheets and catalogs for engineering and installation information. In addition to its inherent qualities of beauty, durability and low maintenance, copper''''s reusability makes it an ideal application in sustainable projects. NIBCO Push fittings are backed by a 25-year limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry.