Mechanical devices in which oil is used need to be cooled, which means that the oil should not be hotter or colder than the temperature, the task of keeping this temperature normal is the responsibility of the thermostat, which is placed between the path of the cooling device or the radiator. takes and keeps the temperature in normal range. The thermostat kit or valve thermostat includes a completely closed chamber and a rod and spring that are placed in this chamber and there is a wax-like substance that turns into a liquid and expands as the temperature increases, and this expansion causes pressure on the rod and door. The result is pushing it back and opening or closing the path. It is called a thermostatic chamber piece, even if it is called a cartridge.
