What's the purpose of the thermostatic valve and the temperature pack ah?

The core component of the thermostatic valve is the sensor, that is, the temperature package. According to the temperature packet location distinction, thermostatic controller has a temperature packet built-in and temperature packet external (remote type) two forms, the temperature setting also has two forms, according to its window display to set the required control temperature, and automatic control. Temperature packets filled with temperature-sensitive media, can sense the ambient temperature, with the induction of temperature changes produce volume changes, drive the spool of the regulator valve to produce displacement, and then adjust the amount of water through the radiator to change the heat dissipation radiator