Self-contained temperature control valveTemperature regulating valves can be categorized into heating and cooling types. The working principles of self-contained temperature control valves for different applications are generally similar, utilizing the principle that the sensing fluid expands upon heating and contracts upon cooling, as well as the principle that fluids are incompressible. Below, we take the heating temperature regulating valve as an example, combining it with a diagram to illustrate its working process: The temperature sensor is inserted into the controlled medium. When the controlled medium temperature increases, the sensing fluid expands, overcoming the spring resistance to push the valve core downward, causing the valve to close and reduce the flow of the heat medium. Conversely, when the controlled medium temperature falls below the set value, the sensing fluid contracts, the spring resets, and the valve core opens, increasing the flow of the heat medium to raise the controlled medium temperature. This cycle repeats, maintaining the controlled medium temperature within the allowable range of the set temperature value.