A pneumatic butt weld (BW) ball valve is an industrial valve designed to control fluid flow in a pipeline using compressed air or gas to actuate the valve. Butt welding is a method of joining a valve to a pipe, providing a durable and leak-proof connection, often used in high pressure and high temperature applications. These valves are widely used in various industries to regulate the flow of liquids, gases and slurries in a precise and efficient manner.