What safety device is often included in pneumatic systems to prevent over-pressurization?

In pneumatic systems, a relief valve is an essential safety device designed to prevent over-pressurization. When the pressure in the system exceeds a predetermined limit, the relief valve opens to allow excess air to escape, thereby preventing damage to equipment and ensuring safe operation. This mechanism protects components such as tubes, seals, and actuators from failure due to excessive pressure, which can lead to catastrophic system malfunctions or hazards.

The relief valve is specifically engineered to operate in response to pressure changes, making it a critical component in maintaining optimal performance and safety within pneumatic systems. Its role in safeguarding the system against pressure build-up is crucial, particularly in applications where fluctuations in pressure can occur.

The other choices serve different functions in a pneumatic system. A pressure switch detects specific pressure levels and can trigger alarms or automatic controls, but it does not inherently prevent over-pressurization. A flow control valve regulates the flow rate of air within the system, which is important for controlling speed and movement, but does not address pressure concerns directly. A compressor generates the air used in the system, but does not serve as a protective mechanism against over-pressurization. Therefore, the relief valve is the correct safety device to include in a pneumatic system for the purpose of