What is commonly found on a steam boiler?

A low water cut-off is a critical safety device commonly found on steam boilers. It is designed to monitor the water level within the boiler. If the water level drops below a certain threshold, indicating a potentially dangerous lack of water, the low water cut-off automatically shuts down the burner or the boiler to prevent overheating and possible catastrophic failure, such as a boiler explosion or a significant structural failure.

The low water cut-off ensures the safe operation of steam boilers by preventing damage that can occur when a boiler operates without sufficient water. This is particularly important in steam systems where maintaining appropriate water levels is necessary for proper steam generation and operational efficiency.

While expansion tanks, condensate pumps, and burner controls are important components in related systems, they serve different functions and are not as universally present in all steam boiler setups as the low water cut-off, which is essential to operational safety in steam boiler applications.