The Model EA12 actuator is a spring return gear driven
crankshaft actuator for two position operation of dampers, valves
or other equipment that require return to normal position upon power
interruption. The hardened steel crankshaft is driven through a train
of precision hobbed gears. The actuator is driven by a shaded pole
motor that is completely submerged in oil and sealed in an aluminum
case to assure long life and minimum maintenance. The gear train of
the EA12 crank actuator is also sealed in oil.
Working in conjunction
with primary loop controllers, these power units are ideal for ON-OFF
control of valves and dampers. The EA-12 travel time is 20 seconds
and its travel limit is 170 degrees clockwise. The spring return is
counterclockwise to the original position when de-energized. The Model
EA12-00000-000-0-00 is UL/CSA listed. All others models are UL/cUL
listed. The EA12 is compatible with the VB-7000 and VB-9000 valves
in this catalog.
Spring return two position operation