What role does a pressure relief valve play in boiler safety?

A pressure relief valve is a critical safety device in boiler systems, designed to maintain safe operating pressures. When the pressure within the boiler exceeds a predetermined level, the valve automatically opens to release excess pressure. This action prevents the boiler from becoming overpressurized, which could lead to catastrophic failures, including explosions or ruptures. By mitigating the risk of overpressure conditions, the valve serves an essential role in protecting both the boiler and surrounding equipment, ensuring safe operation for personnel as well. This is why the function of automatically releasing excess pressure is fundamental in boiler safety.