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Description
VA-4233 Series Electric Valve Actuators use a stepper motor to accurately position control valves in HVAC applications. In the event of a power failure, a spring in the actuator automatically returns the valve to the full stem-up position. These direct-mount, spring return electric actuators provide a minimum 61 lb (271 N) force output for floating, on/off, or proportional control. They can be easily field mounted or ordered factory coupled to Johnson Controls 1/2 through 1-1/4 in. VG7000 Series Bronze Control Valves, with no additional linkage required.

The VA-4233 Series can also be field mounted to select Invensys valves, using mounting kits available from Johnson Controls. Proportional control models include an AUTO stroke calibration feature that eliminates the need for manual calibration or adjustment after installation. Integral auxiliary switches are available for indicating end stop position or to perform switching functions. On proportional models, position feedback is also available through a proportional DC voltage signal. All models feature a hand crank for manual positioning of the valve, independent of a power supply.
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Specs
Actuator Type:
Proportional
Voltage:
24v
Torque:
61 lb-in
Fail Safe Mode:
Spring Return
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