What is the role of a pressure gauge in a boiler system?

In a boiler system, the primary role of a pressure gauge is to monitor and indicate the operating pressure of the boiler. This gauge provides critical information about the pressure levels within the boiler, which is essential for safe and efficient operation. Maintaining the appropriate pressure is vital because it affects not only the efficiency of the boiler but also its safety.

By monitoring the operating pressure, the pressure gauge allows operators to prevent situations that could lead to overpressure, risking equipment damage or hazardous conditions. It also helps ensure that the boiler operates within the designed pressure range, which is necessary for optimal performance and energy efficiency.

The other functions mentioned do not relate directly to the role of a pressure gauge. While controlling steam output and regulating feedwater temperature are important functions in boiler operation, these processes are generally managed by other components and controls in the system rather than by the pressure gauge itself. Assessing water quality is also a separate concern that requires different instruments and measures, focusing on ensuring the water is free from impurities that could affect boiler performance and longevity.