What is the primary purpose of the water column in a boiler?

The primary purpose of the water column in a boiler is indeed to provide a visible indication of the water level. By serving as a gauge, the water column allows operators to monitor the water level in the boiler accurately. This is critical because maintaining an appropriate water level is essential for safe boiler operation. If the water level is too low, it can lead to overheating and potential damage to the boiler components. Conversely, if the water level is too high, it can cause flooding and other operational issues.

The water column plays a vital role in ensuring that operators are aware of the current water level, which is fundamental for safe and efficient boiler operation. Having a reliable way to visually check the water level helps prevent potentially dangerous situations and ensures compliance with operational standards.