What is a boiler blow off?

A boiler blow off refers specifically to the mechanism designed to discharge sediment and impurities that accumulate in the bottom of a boiler. This accumulation can occur due to the heating process, where minerals from the water settle out, leading to the build-up of sediment. Regularly blowing off the boiler helps maintain efficiency and safety, as a heavy accumulation of sediment can impair heating performance and even damage the boiler. By utilizing the blow-off outlet, operators can remove this sediment, thus ensuring that the boiler operates effectively and prolonging its lifespan.

The other options do not accurately describe the function or purpose of a boiler blow off. For instance, an outlet for water supply pertains to providing water to a system, while a type of water filtration system focuses on purifying water rather than discharging sediment. A heating system for water describes the boiler’s primary function, but it does not reflect the blow-off outlet's specific role in maintaining water quality within the boiler system.