What device is used on a deaerator to prevent water from backing up into the steam line?

In the context of a deaerator, the primary function is to remove dissolved gases, particularly oxygen and carbon dioxide, from water before it enters a boiler. This process helps prevent corrosion within the boiler system. An overflow device plays a crucial role in maintaining the proper operation of the deaerator. It provides a pathway for excess water or condensed steam to exit the system, thereby preventing any potential backup of water into the steam line.

By allowing excess water to be expelled, the overflow device ensures that the levels within the deaerator remain stable, preventing situations where water might otherwise flow backward into the steam lines. This is essential for maintaining efficiency and safety within the steam system, as water in steam lines could lead to water hammer and other operational issues.

Understanding this function highlights the importance of proper flow management in systems utilizing deaerators, where maintaining clarity in the separation of steam and water is crucial for optimal performance.