What is a blow-off valve used for in a boiler?

A blow-off valve in a boiler is specifically designed to release accumulated sediment and impurities that settle at the bottom of the boiler. Over time, minerals and other contaminants can build up in the boiler water, leading to reduced efficiency, potential corrosion, and other operational issues. By periodically opening the blow-off valve, the operator can flush out these sediments, ensuring that the boiler operates efficiently and safely.

This maintenance step is crucial because it helps maintain water quality within the boiler, preventing problems that could affect performance. Regular use of the blow-off valve is an essential part of proper boiler maintenance, contributing to the longevity and efficiency of the system.