ASTM A216 WCB Gate Valve is a valve used for controlling the flow of fluids within a pipeline. It is manufactured according to the American Society for Testing and Materials (ASTM) Standard A216 and is made of WCB carbon steel castings. WCB stands for "Wrought Carbon Steel for Valve Trim," which refers to the forged carbon steel used for valve fittings. This valve features a gate mechanism that can open or close to control the passage of fluids. The body and internal parts of the valve, such as the gate and seat, are made of WCB carbon steel, a material widely used in the manufacturing of industrial valves due to its excellent strength and toughness.