What is the purpose of a blow-off valve in a boiler system?

The purpose of a blow-off valve in a boiler system is fundamentally to remove sludge and sediment that accumulate at the bottom of the boiler. Over time, impurities in the feedwater can settle, leading to the formation of sludge, which can adversely affect boiler efficiency and safety. The blow-off valve allows operators to periodically discharge this accumulated sediment, thus maintaining the boiler’s optimal operation and extending its lifespan.

Maintaining a clean boiler bottom prevents potential issues such as overheating and damage to the boiler components. Regular blow-off procedures are critical as they help ensure that the system runs efficiently and that the quality of steam produced is not compromised by these deposits.