Copper Elbow 45 : The copper 45-degree elbow is used in residential and commercial systems such as potable water, air conditioning and refrigeration. The 45-degree elbow features solder cups. The fitting provides a means of changing the pipe line direction by 45 degrees. In addition to its inherent qualities of beauty, durability and low maintenance, copper’s reuse-ability makes it an ideal application in sustainable projects. Copper construction For use with above ground water-supply piping Changes the direction of piping 45 degrees Solder connections Resists dezincification Meets ANSI B16.22 and ASME specifications Maximum working pressure of 582 psi