Answer: In the early days, most temperature control valves were electromagnetic temperature control valves. In recent years, through the digestion and absorption of imported compressor technology, wax temperature control valves have also been widely used. This type of temperature control valve consists of two parts: valve and temperature control element. The temperature control element includes special expansion temperature-sensitive paraffin and copper shell. At a specific phase change temperature, the expansion stress of the expansion paraffin is a constant value, which is much greater than the thrust required by the thermostatic valve. The expansion paraffin is sealed in the shell. When the temperature rises to the melting point of the paraffin, the volume expands and pushes the push rod. The slide valve driving the temperature control valve moves; when the temperature drops, the paraffin shrinks when it is cold, and the valve is reset under the action of the spring rebound.
The characteristics of this temperature control valve: large thrust, the paraffin inside the element can reach more than 200 atmospheres when it expands, the linearity of the stroke temperature curve is good, so the temperature control ability is strong, the element is rigid, high strength, and long life.
