In the context of boilers, what is the function of a blow-off valve?

The function of a blow-off valve in the context of boilers is specifically to remove sediment. Over time, impurities and minerals can accumulate at the bottom of the boiler, which can lead to various operational issues, including reduced efficiency or overheating. The blow-off valve allows operators to periodically expel this sediment and water from the boiler, thereby maintaining the quality of the water inside the boiler and ensuring safe and efficient operation.

Regularly using the blow-off valve helps prevent issues such as scale buildup, which can impair heat transfer efficiency and damage the boiler components. By controlling sediment levels, the blow-off valve plays a critical role in the maintenance and longevity of the boiler system.