What is the working principle of the radiator valve?

The working principle of the radiator valve mainly involves the thermostatic control valve, which consists of two parts: the thermostatic controller and the valve body. When the user sets the thermostatic controller to the required temperature, the valve will automatically adjust the flow rate according to the indoor temperature to achieve a constant temperature effect. The specific principle is as follows:

‌ Temperature sensing element reaction‌: When the indoor temperature exceeds the set temperature, the temperature sensing element (temperature package) in the thermostatic controller expands due to heat, pushing the valve stem to close the valve, reducing the radiator water flow, and the room temperature drops.
‌ Valve opening adjustment‌: When the indoor temperature is lower than the set temperature, the temperature sensing element contracts due to cold, and the return spring in the valve core pushes back the valve stem, causing the valve to open wider and increase the radiator water flow until the room temperature reaches the set value.
The radiator thermostatic control valve uses this principle to achieve automatic room temperature adjustment, which saves energy and prevents users from making tedious repeated adjustments.