The device used to regulate the flow of air in a pneumatic system is called what?

The device used to regulate the flow of air in a pneumatic system is a pressure regulator. This component plays a crucial role in maintaining a consistent pressure level within the pneumatic systems, allowing for precise control over the system's performance. By adjusting the pressure of the air delivered to the various components, such as actuators and valves, the pressure regulator ensures optimal operation and efficiency.

In pneumatic applications, the pressure regulator is vital for preventing pressure fluctuations that could lead to erratic behavior of actuators or other components, thus enhancing reliability and extending the lifespan of the equipment. It acts as a means to manage the air supply, ensuring it matches the demands of the system effectively. This regulation is essential for applications requiring specific pressure settings for different tasks, such as clamping, lifting, or moving objects.

Other devices listed, such as compressors, flow control valves, and check valves, serve different functions within a pneumatic system: compressors generate compressed air, flow control valves regulate the pace at which air is delivered to a system rather than the pressure, and check valves allow air to flow in one direction to prevent backflow. Each of these components contributes to the system's overall function but does not directly manage pressure as the pressure regulator does.