Wax expansion material sealed in the shell expanded subjected to temperature induction, and rubber seal in the thermostatic element push the push rod to move under the expansion pressure. Heat is converted into mechanical energy, and the thermostatic element push rod produces an upward displacement, and this displacement is used for the realization of automatic control of various functions. The return of the push rod is done by a load after the setting temperature drops. A linear wax expansion executive part converts heat into mechanical displacement by phase transition behavior of wax. The product is small in volume, fast in response speed, almost infinitely repeated in heat regulation of rising and cooling displacement. Its expansion rate is between 1% – 25% with the temperature range from 30 to 300 Fahrenheit 

The thermostatic valve ensures the effluent temperature’s constancy and is not affected by changes of water temperature, flow rate and water pressure. It solves the problem of sudden cold and heat of water temperature while bathing. The mixing valve will automatically turn off the hot water in a few seconds when meeting a sudden cold water interruption and played the role of safety protection.

Thermal actuator is used in a closed loop of a water heating system or central air conditioning water system.The opening and closing of the closed loop valve is controlled automatically by the wax thermostatic element of the electric actuator. 

When we need to increase the indoor temperature, wax thermostatic element is heated and expanded, the valve stem of the closed loop valve automatically rises, making the closed loop valve open for heating; conversely, when we need to reduce our indoor temperature, turn off the heating power of the wax propeller,wax thermostatic element will shrink and make the valve stem of the closed loop valve drop automatically, thus closing the closed loop valve and stopping heating.