How does a thermostatic expansion valve work?
Danfoss GmbH Kältetechnik
Electronic injection valve ETS stepper motor
ETS is a series of electrically operated expansion valves

ETS is a series of electrically operated expansion valves with stepper motor for precise liquid injection in the evaporator for air conditioning and refrigeration applications. They cannot be used with flammable hydrocarbons. The valve piston and linear positioning mechanism are fully balanced.
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Know-How Article
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