The 90° elbow features solder cups and a close rough radius. The fitting provides a means of changing the pipeline direction 90°. It is used when velocity is not a problem. In addition to its inherent qualities of beauty, durability and low maintenance, copper's reusability makes it an ideal application in sustainable projects. Nibco® copper fittings are manufactured in an ISO 9001 certified facility, and backed by a 50 years limited warranty. Because of its longstanding reputation for innovation and precision in design and manufacturing, Nibco is the preferred brand in the industry.