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Working in conjunction with primary loop
controllers, these low torque non-spring return actuators will proportionally
position fuel valves, butterfly valves, dampers or other similar devices.
The output shaft moves in both directions and can stop at any point
in the stroke. The hardened steel crankshaft is driven through a train
of precision hobbed gears sealed in oil. This reliable actuator is
driven by a shaded pole motor completely submerged in oil and sealed
in an aluminum case, minimizing maintenance. |
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Four models are
available featuring a standard 100ž internal feedback slidewire
and a selection of travel time and rotation limit. Not available with
end limit switches, some models have auxiliary switches and a variety
of optional features. The EA-20 Series are UL and cUL or CSA listed,
except for models with built-in transformers. CSA listed models are:
EA21-00003-000-0-00, EA22-00000-000-0-00 and EA24-00000-000-0-00.
It is compatible with the VB-7000- and VB-9000 valves in this catalog.
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Proportional actuators with built-in feedback
potentiometer