The electrical control valves EX5, EX6, EX7 and
EX8 from Emerson Flow Controls Canada are optimised for control of liquid or gaseous mass flow
in refrigeration systems. The stepper motor drive, which produces exact
valve opening, is energised directly from the electrical power and therefore
operates independent from differential pressure.
The controller is responsible for the respective control
task. Emerson Flow Controls Canada controllers are optimised for the requirements of
refrigeration and air-conditioning and perform all control tasks which have
been performed by conventional valves in the past, as superheat control or
capacity control.
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