Pneumatic fluids are gases used in pneumatic systems to transmit power and control movement. Commonly, air is the primary pneumatic fluid, but other gases can also be utilized. These systems rely on the compression and expansion of gases to create force, making them essential in various applications, such as industrial machinery and automated systems. In pneumatic systems, the properties of pneumatic fluids allow for quick and efficient operation. The compressibility of gases enables rapid movement and flexibility in design. Additionally, pneumatic systems are often preferred for their simplicity, lower maintenance needs, and safety compared to hydraulic systems, which use liquids.