Johnson Controls VA-4233-GGC-2 Valve Actuator

The Johnson Controls VA-4233-GGC-2 is a heavy-duty spring return globe valve actuator engineered for precise modulation in demanding HVACR environments. Built with a robust stepper motor, this direct-coupled unit delivers a minimum 61 lb-in torque to manage VG7000 Series bronze valves and select Invensys configurations. It supports multiple proportional control signals, including 0-10Vdc, 2-10Vdc, and 4-20mA, all field-selectable to match your controller’s output. The integrated AUTO stroke calibration feature is a significant time-saver, automatically mapping the signal across the actual valve stroke (up to 29/32") without manual potentiometers. In the event of a power loss, the mechanical spring return ensures the stem fails to the up position, protecting your system. This model also features two SPDT auxiliary switches for end-stop signaling and a 48-inch cable for simplified field wiring. For manual overrides during commissioning or power outages, a dedicated hand crank is included as standard equipment.

• Universal Input Compatibility: Supports 0-10Vdc, 2-10Vdc, 6-9Vdc, and 4-20mA proportional signals via easy-to-use onboard switches.
• Automated Commissioning: The AUTO stroke calibration eliminates the need for manual stroke adjustments, ensuring full-range performance on every install.
• Failsafe Reliability: Mechanical spring return stem up action provides immediate system protection during power interruptions.
• Advanced Feedback: Includes two SPDT auxiliary switches and DC voltage feedback for real-time monitoring of valve position by the BAS.
• Flexible Mounting: Designed for direct-mount installation on 1/2" to 1-1/4" globe valves with no additional linkages required.

Can the VA-4233-GGC-2 be used on non-Johnson Controls valves?
Yes, while it is factory-standard for VG7000 Series valves, it can be field-mounted to various Invensys/Robertshaw VB-7xxx and VB-9xxx series valves using specific mounting kits.

How do I reset the stroke calibration if I move the actuator to a different valve?
The actuator stores the stroke parameters in non-volatile memory. To recalibrate for a new valve, you must trigger the memory clearing sequence (refer to the technical manual) to allow the AUTO stroke calibration to run again.

What is the purpose of the two auxiliary switches?
These SPDT switches allow you to interlock other equipment, such as starting a pump or signaling a DDC controller, based on the actuator reaching specific points in its travel.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.