What is a low-water cutoff device?

A low-water cutoff device is a safety mechanism utilized in boilers to prevent dangerous situations that can arise from insufficient water levels. Its primary function is to monitor the water level within the boiler and shut down the boiler if the water falls below a predetermined level. This is crucial because operating a boiler without enough water can lead to overheating, potential damage, or even explosions due to the lack of a cooling medium for the boiler's components.

By automatically deactivating the boiler in low-water conditions, this device serves as a critical safety feature that protects both the equipment and the facility. The importance of this device cannot be overstated, as it acts to prevent catastrophic failures that could pose risks to personnel and infrastructure.

Other options, such as tools for measuring water temperature, devices that control boiler pressure, or components that filter impurities, do not fulfill the critical safety role that a low-water cutoff device provides. These alternatives focus on different aspects of boiler operation, but none address the need for emergency shutdown to protect against low water levels.