What is the purpose of a blowoff valve in a boiler system?

The purpose of a blowoff valve in a boiler system is primarily to facilitate sediment removal. Over time, sediment and mineral deposits can accumulate at the bottom of the boiler. If these sediments are not periodically removed, they can lead to inefficiencies in the heating process, reduced heat transfer, and even potential damage to the boiler itself. The blowoff valve allows operators to safely expel this buildup of sediment and ensure the smooth operation of the boiler.

This maintenance function is critical for extending the lifespan of the boiler and maintaining its efficiency. Regular blowoff procedures help prevent operational issues and ensure that the boiler operates effectively, which is why this option is the correct answer.