What is the maximum operating pressure of a low pressure steam boiler?

The maximum operating pressure of a low pressure steam boiler is defined as 15 psig (100 kPa). This classification is significant because it establishes the threshold that distinguishes low pressure steam boilers from higher pressure systems.

Low pressure steam boilers are typically used in applications such as heating systems and some industrial processes where pressures don’t need to exceed this limit. Staying within the 15 psig maximum ensures safe operation, as it allows for effective steam generation without exceeding the structural capabilities of the boiler components. Higher pressures, such as those indicated in the other options, would classify the boiler as a medium or high pressure steam boiler, which is regulated differently and involves additional safety considerations, such as more stringent design standards and operational protocols.

Understanding these classifications helps ensure compliance with safety regulations and contributes to the safe and efficient operation of steam systems.