What does a low-water cutoff device do?

A low-water cutoff device is a critical safety feature in steam boiler systems. Its primary function is to monitor the water level within the boiler and ensure it does not drop below a safe threshold. When the water level falls too low, the cutoff device automatically triggers an alarm and shuts down the boiler to prevent it from running dry. This is essential because operating a boiler without sufficient water can lead to overheating, damage to the boiler, or even an explosion.

By stopping the boiler from running dry, the low-water cutoff device protects both the equipment and personnel in the vicinity. It plays a vital role in maintaining safe operating conditions. While other devices within a boiler system may manage steam pressure, measure steam temperature, or monitor fuel levels, the specific responsibility of a low-water cutoff is exclusively related to water levels and safety.