A coaxial valve is a compact flow control valve designed with an inline structure, allowing the valve mechanism and fluid passage to remain on the same axis. This design provides fast response, low flow resistance, and reliable operation in demanding applications. Coaxial valves can handle liquids, gases, and certain aggressive media, depending on the material and configuration. They are commonly used in automation equipment, vacuum systems, chemical processing, pneumatic systems, water treatment, and industrial fluid control applications requiring efficient and precise flow management.