What is a back-seated valve?

A back-seated valve is a type of valve designed to prevent the flow of fluid in the reverse direction, effectively ensuring that fluid can only move in one designated direction. It typically features a mechanism that allows the valve to close or "seat" tightly when backflow occurs, helping to protect equipment and maintain system integrity. These valves are commonly used in various applications, including Plumbing and industrial systems, to prevent contamination and maintain pressure.