Which type of feedwater regulator functions through the thermal expansion and contraction of a thermostatic element?

The thermal expansion feedwater regulator operates based on the principles of thermal expansion and contraction of a thermostatic element. As water temperature changes, the thermostatic element within the regulator expands or contracts accordingly. This movement activates a mechanism that adjusts the flow of feedwater to the boiler, ensuring that the system maintains appropriate water levels and pressures.

This type of regulator is designed to react automatically to temperature changes, making it particularly effective in maintaining stable conditions within the boiler system. The reliance on thermal properties allows for a simple yet effective method of controlling feedwater without the need for complex electronic components or pressure-sensitive systems. Therefore, it is crucial for ensuring that the boiler operates efficiently, adapting to variations in thermal output.