Pneumatic valves are devices used to control the flow of compressed air in pneumatic systems. They regulate the direction, pressure, and flow rate of air, enabling the operation of various tools and machinery. These valves can be manually operated or automated, depending on the application. Common types of pneumatic valves include solenoid valves, ball valves, and gate valves. They are essential in industries such as manufacturing, automotive, and robotics, where precise control of air pressure and movement is crucial for efficient operation. Proper selection and maintenance of pneumatic valves ensure optimal performance in these systems.