The lead-free wrot copper solder pressure tee 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 tee features solder cups. The fitting allows for a connection to be made in continuous pipeline and branch out to a different direction In addition to its inherent qualities of beauty, durability and low maintenance, copper's reusability makes it an ideal application in sustainable projects. 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, is the preferred brand in the industry.