What is the function of relief valves in a compressed air system?

Relief valves play a crucial role in maintaining safety within compressed air systems by ensuring that the pressure does not exceed a predetermined limit. When the pressure in the system rises above this limit, the relief valve opens, allowing excess air to escape. This helps to prevent potential failures or hazards that could result from over-pressurization, such as equipment damage or catastrophic failures.

The design of these valves allows them to react quickly to changes in pressure, thereby acting as a safety mechanism that protects both the system components and the overall operation. This function is vital for compliance with safety standards and regulations, ensuring that the operational integrity of the compressed air system is upheld.

In contrast, increasing pressure is typically handled by compressors, while controlling flow rate involves different mechanisms such as regulators or throttling devices. Filtering impurities falls under the function of air dryers or filters rather than relief valves.