The NIBCO® lead-free wrot copper solder pressure 90 deg close rough Elbow is used in residential and commercial systems such as potable water, air conditioning and refrigeration. Options also include cleaned and bagged for oxygen service (medical gas). The 90 deg Elbow features solder cups and a close rough radius. The fitting provides a means of changing the pipeline direction 90 deg. It is used when velocity is not a problem. 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® copper fittings are manufactured in an ISO 9001 certified facility and backed by a 50 year limited warranty. Because of its long standing reputation for innovation and precision in design and manufacturing, NIBCO® is the preferred brand in the industry.