What happens when the pressure in a relief valve exceeds the set pressure?

When the pressure in a relief valve exceeds its set pressure, the valve opens to release excess pressure from the system. This function is crucial for maintaining safety and preventing damage to equipment. The primary purpose of a relief valve is to protect pressurized systems by allowing a controlled release of fluid, ensuring that the pressure does not exceed safe operational limits.

In scenarios where the pressure exceeds the set threshold, the valve opens, allowing fluid—usually liquid or gas—to escape, which reduces the pressure within the system. This mechanism helps to avoid potential failures or catastrophic events that could occur if the pressure were to rise uncontrollably.

Understanding the operation of relief valves is vital for anyone working with pressurized systems, as they are integral to maintaining system integrity and safety.