The 90° Long Turn Elbow, 2-1/2" Tube OD x 2-1/2" Tube OD, is a copper pipe fitting designed to change the direction of a piping system by 90 degrees. With a outside diameter (OD) on both ends, this elbow is commonly used in plumbing, HVAC, refrigeration, and industrial systems where a sharp yet smooth turn is required in the piping layout. The "long turn" design provides a gradual bend, which reduces the potential for flow restriction and pressure drop, ensuring optimal system performance.