This NIBCO lead-free bronze solder pressure drain coupling is used in residential and commercial plumbing applications. The drain coupling features solder cups and a drain port. The fitting is used to connect two lengths of tube together and provide a means for draining the line. 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 longstanding reputation for innovation and precision in design and manufacturing, NIBCO is the preferred brand in the industry.Features Lead-free Dezincification resistant Silicon Performance Bronze® alloy ASME B16.18 design standards Third-party certified to NSF/ANSI 61 and 372