Johnson Controls VA9104-GGA-2S Actuator

The Johnson Controls VA9104-GGA-2S is a heavy-duty non-spring return actuator designed for proportional control of 1/2" to 2" ball valves in commercial HVAC systems. Operating on 24 VAC power, this unit delivers a consistent 35 lb-in torque and features a 60-second travel time for precise modulation. It arrives field-ready with a 120-inch plenum-rated cable and a manual override handle for simplified commissioning and emergency positioning. Built to withstand demanding building automation environments, the VA9104-GGA-2S supports multiple input signals, including 0-10 VDC, 2-10 VDC, and 4-20 mA (with a 500-ohm resistor), ensuring seamless integration with various controllers. Its direct-coupled design eliminates the need for complex linkages, reducing mechanical failure points in hot water, chilled water, or 50% glycol applications. This electric actuator is engineered for a long service life, capable of exceeding 200,000 cycles, and maintains ANSI Class IV leakage ratings with equal percentage flow characteristics for stable temperature regulation.

Key Benefits for HVAC Contractors

• Versatile Control Logic: Field-selectable proportional input signals allow for direct compatibility with most standard building management systems (BMS).
• Plenum-Rated Leads: The included 120" plenum cable meets fire safety requirements for installation in air handling spaces without additional conduit in many jurisdictions.
• Direct-Mount Efficiency: Specifically optimized for Johnson Controls ball valves, the non-spring return motor provides reliable 35 in-lb torque without the bulk of spring-return housings.
• Manual Override Capability: Simplifies troubleshooting and manual positioning during power-down states or system balancing.
• High Close-Off Pressure: Rated for up to 200 psid close-off, ensuring tight shut-off and preventing ghost flows in high-demand hydronic circuits.

Common Questions

What happens to the valve position during a power failure?
As a non-spring return actuator, the VA9104-GGA-2S will remain in its last commanded position upon loss of 24V power. If your application requires a fail-safe (open or closed) position, move to a VA9203 or VA9208 series spring-return model.

Can I use this actuator with a 4-20 mA signal?
Yes, the VA9104-GGA-2S can accept a 4-20 mA control signal provided a field-installed 500-ohm resistor is utilized across the input leads to convert the signal to 2-10 VDC.

Is this unit compatible with low-pressure steam?
This actuator is compatible with valves used in steam applications up to 15 psi, provided the valve assembly includes the appropriate stainless steel trim and thermal spacers to protect the actuator motor from excessive heat.

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.