What are the classifications of temperature control valves?

The temperature control valve can be divided into: self-operated temperature control valve and electric temperature control valve.

Self-operated temperature control valve. The liquid expansion in the temperature sensor is uniform, and its control function is proportional adjustment. When the temperature of the controlled medium changes, the volume of the temperature-sensitive liquid in the sensor expands or contracts. When the temperature of the controlled medium is higher than the set value, the temperature-sensitive liquid expands and pushes the valve core downward to close the copper valve, reducing the flow of heat medium; when the temperature of the controlled medium is lower than the set value, the temperature-sensitive liquid shrinks and the return spring Push the valve core to open to increase the flow of heat medium.

Electric temperature control valve System composition diagram of electric temperature control valve System composition diagram of electric temperature control valve Electric temperature control valve is a typical application in the field of temperature control such as HVAC. The controller has PI and PID adjustment functions, precise control, multi-loop control, and diverse functions. It can realize the control of fluid flow, pressure, pressure difference, temperature, humidity, enthalpy and air quality. Actuators are electromechanical and electrohydraulic, with manual and automatic adjustment functions, sensitive adjustment, large shut-off force, and adjustable flow characteristics (linear equal percentage). The electro-hydraulic actuator has a power-off automatic reset protection function, can receive 0-10V or 4-20MA signals and has a valve position feedback function. The valve body is a flow regulating valve, which is suitable for circulating pipeline chilled water, low pressure hot water, domestic hot water, high pressure hot water, sea water, hot oil, and steam. The adjustment linearity is good, the adjustable ratio is large, the seal is tight, and the temperature is resistant. Prevent cavitation.
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