Johnson Controls VA-8122 Technical Bulletin

VA-8122 Proportional Valve Actuator
The VA-8122 Proportional Valve Actuator is an electric
actuator that provides proportional control of valves
with up to a 5/16 in. stroke in Heating, Ventilating, and
Air Conditioning (HVAC) applications. This compact,
non-spring return actuator has a 22 lb minimum
seating force in a compact, easy-to-install package.
The VA-8122 can be ordered factory coupled to the
1/2 in. or 3/4 in. VG7000 Series bronze valves for hot
or cold water service only. The VA-8122 can be used
for retrofits of VT Series Terminal Unit Valves (with
slotted stems) and VB-5x39 Series Flare Valves.
Refer to the appropriate valve literature for more
information.
q
AUTOCAL Pushbutton
q
Simplified Setup and
Adjustment Procedures
q
Selectable Direction of
Action, Drive Down (DD) or
Drive Up (DU)
q
Wide Range of Control
Inputs (Voltage and
Current)
q
Power Failure Detection;
Low Voltage Indication
q
Light-Emitting Diode (LED)
© 2016 Johnson Controls, Inc.
Part No. 14-1213-8, Rev. C
Code No. LIT-977380
Features and Benefits
Allows the actuator to define the control input
range proportionally over the stroke
Reduces installation costs
Provides application flexibility
Meets the needs of most applications
Prevents data corruption of the actuator's
memory and warns of insufficient supply
voltage
Reduces commissioning time and displays
operating status
14- 1213- 8, Rev. C
Product/Technical Bulletin VA-8122
Issue Date March 2016
Figure 1: VA-8122-1 Valve Actuator
1
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