What is a common indicator of a faulty gauge glass?

A faulty gauge glass is often indicated by an inaccurate water level reading. The main purpose of a gauge glass is to provide a clear and reliable visual representation of the water level within a boiler or steam system. If the gauge glass is compromised—due to issues such as obstruction, contamination, damage, or improper installation—it may not accurately reflect the actual water level in the boiler.

This inaccuracy can lead to significant safety risks, including boiler overheating or even failure, since operators rely on these readings to maintain proper water levels and ensure safe operation. Therefore, if you observe inconsistent or incorrect water level readings on the gauge glass, it's crucial to investigate further and address any underlying problems. A well-functioning gauge glass should present a clear and stable view of the water level, allowing for precise and safe monitoring.