ZWT self operated temperature control valve, composed of a control valve and thermostat. Divided by use of heating and cooling.
Applicable to non corrosive liquids, gases and steam, in various cooling system temperature control. When charged with medium temperature, control valve is closed (heating); when the controlled medium temperature, control valve opening (cooling).

Without external energy, effectively save energy |||
High control precision, stable, safe and reliable |||
Temperature of liquid expansion is uniform, proportional control |||
The temperature set has the advantages of simple operation, convenient adjustment of |||
Small volume, light weight, convenient installation "|||

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The working principle

ZWT - type temperature regulating valve can be divided according to use: heating temperature control valve, cooling temperature control valve, three confluence temperature control valve, temperature control valve three shunt. The working principle of different uses of the self operated temperature control valve is largely the same, all is the use of temperature sensing liquid cooled heat expansion, contraction and liquid can not be compressed principle of regulation.
The heating temperature control valve for example below, combined with the working principle diagram and its working process is described: insert temperature sensor controlled medium, when the controlled temperature rise, temperature sensing liquidExpansion, force to overcome the spring force, push the spool moves downwards, tends to close the valve, so as to reduce the flow of heat medium; on the contrary, when the controlled medium temperature is lower than the set value, temperature of liquid contraction, spring reset push open the valve core, increase the flow of heating medium, make the controlled medium temperature tends to rise. Move in circles, thus enable the controlled medium temperature maintained at the set temperature value within the allowable range.

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