Johnson Controls VA9203-BUB-2 Actuator

The Johnson Controls VA9203-BUB-2 is a high-performance spring return direct coupled actuator designed specifically for HVAC on/off control. This unit provides 27 lb-in torque (8 N·m) and is engineered for seamless operation with VG1000 Series ball valves, including DN15, DN20, and DN25 sizes. Built for versatility, this electric valve actuator features a universal power supply compatible with 85-264Vac, eliminating the need for separate models in different voltage environments. The included SPDT auxiliary switch is field-adjustable, providing precise end-stop position feedback or enabling intermediate switching functions within the 95-degree rotation range. With a power-on run time of less than 75 seconds and a reliable mechanical spring return fail-safe, this actuator ensures positive shut-off during power loss. The 48-inch appliance cable simplifies integration into existing building automation systems, while the NEMA 2/IP54 rated housing protects internal components in demanding mechanical room conditions.

Key Benefits

• Universal Voltage Compatibility: Operates on any supply from 85 to 264Vac, reducing inventory requirements for contractors.
• Integrated Feedback: Features a built-in SPDT auxiliary switch for remote monitoring and interlocking with other HVAC equipment.
• Direct-Coupled Mounting: Fast and secure installation onto VG1000 ball valves without the need for complex linkages.
• Mechanical Fail-Safe: Reliable spring return action ensures the valve moves to the safety position during a power outage.
• Precision Flow Control: Optimized for on/off applications in chilled water, hot water, and low-pressure steam systems.

Common Questions

What is the maximum torque rating for the VA9203-BUB-2?
This model delivers 27 lb-in (8 N·m) of torque, sufficient for driving 1/2" to 1" JCI VG1000 Series ball valves under standard operating pressures.

Can the auxiliary switch trip point be adjusted in the field?
Yes, the single SPDT auxiliary switch point is continuously adjustable throughout the entire rotation range, though it comes factory-set at 10% closing.

Is this actuator suitable for steam applications?
The VA9203-BUB-2 is compatible with low-pressure steam (up to 15 psig) when used with stainless steel trim valves, provided the valve stem is mounted horizontally to protect the actuator from 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.