What is the purpose of a pressure relief valve in a boiler?

The purpose of a pressure relief valve in a boiler is to release excess pressure. This safety device is critical in maintaining the integrity of the boiler system. When the pressure within the boiler exceeds the designated safety limits, the relief valve automatically opens to allow steam or water to escape. This prevents catastrophic failures, such as explosions or ruptures, that could occur if the pressure continues to build unchecked.

Maintaining safe operating conditions is essential for both the longevity of the boiler and the safety of personnel. By automatically relieving excess pressure, the valve ensures that the internal pressure remains within a safe range, functioning as a crucial aspect of the boiler's safety system. Thus, the correct understanding of the pressure relief valve as a protective mechanism reinforces its importance in the safe operation of high-pressure boilers.