If the feed water pump fails to return connoisseur to the steam boiler, which safety control protects the boiler?

The low water cut-off is the safety control that protects the boiler in the event that the feedwater pump fails to supply water. Its primary function is to monitor the water level within the boiler. If the water level drops below a certain threshold, indicating that there is not enough water to maintain safe operation, the low water cut-off automatically triggers a shutdown of the boiler. This is crucial because operating a steam boiler with insufficient water can lead to overheating, boiler damage, and potentially catastrophic failure.

By ensuring that the boiler cannot operate without an adequate water supply, the low water cut-off plays a vital role in maintaining safety. This control is part of the system's design to prevent dangerous conditions that can arise from a lack of water, thus safeguarding both the equipment and the users.