31-14MP Concentric is a high-quality, sanitary welding fitting designed to transition fluid flow from one pipe size to another, reducing flow resistance in piping systems. It is made of T304 or T316L stainless steel with a mechanically polished surface finish, has a concentric design, and is available in sizes ranging from 1/2" OD through 12" OD. Its smooth surface is easy to clean and resists bacterial growth, making it ideal for use in a variety of piping system applications.