What function does a city-water make-up actuator serve in a boiler system?

• A. It reduces pressure
• B. It controls water inflow
• C. It monitors steam temperature
• D. It vents gases

Answer: (B)

The city-water make-up actuator is vital for maintaining the proper water level within a boiler system. Its primary function is to control the inflow of water from the municipal supply to replace any water lost due to steam production or other system leaks. By regulating the amount of water that enters the boiler, the actuator ensures that the system operates efficiently and that the water level remains within safe operating parameters, thereby preventing potential damage to the boiler caused by low water levels.

While other functions such as pressure reduction, steam temperature monitoring, and gas venting are important aspects of a boiler system, they are not the responsibilities of the make-up actuator. This actuator specifically focuses on water management, making it crucial for the safe and effective operation of the boiler.