Long radius elbows give less frictional resistance to the fluid than short elbows. Long radius elbows create lesser pressure drop than short radius elbows. Short radius is less costly than long radius elbows. The short radius elbows are used where there is a scarcity of space.
Description
Specification
Typically, a short radius elbow has a centerline radius of 2.5 to 4 times that of its outer diameter. The radius of curvature on a short radius elbow also matches the nominal diameter of the pipe.