What is the primary purpose of a feedwater regulator?

The primary purpose of a feedwater regulator is to maintain a constant water level in the boiler. This function is crucial for the safe and efficient operation of steam boilers. A stable water level ensures that there is always an adequate supply of water to generate steam while preventing the risk of low water conditions, which can lead to overheating or even damage to the boiler.

The feedwater regulator continuously monitors the water level and automatically adjusts the flow of water into the boiler as needed, compensating for changes in steam demand, evaporation rates, and any water loss due to blowdown or leaks. This proactive management helps maintain safety and operating efficiency throughout the boiler's functional life.

Other options focus on different aspects of water management or boiler operation, such as increasing pressure, heating water, or removing impurities; however, these functions are not the primary role of a feedwater regulator. The regulator specifically targets water level control to ensure optimal performance of the steam system.