Nibco lead-free fittings can be used in residential and commercial systems such as potable water, air conditioning and refrigeration. 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. Because of its longstanding reputation for innovation and precision in design and manufacturing, Nibco is the preferred brand in the industry.