Johnson Controls VA-8020-1 Actuator

The Johnson Controls VA-8020-1 Actuator is a synchronous, motor-driven terminal unit actuator designed for floating/incremental control in HVAC systems. Built for 1/2-inch and 3/4-inch valves, this non-spring return actuator delivers a consistent 22 lb shutoff force, ensuring tight close-off on unit vents and baseboard heating applications. With a 24 VAC input and a 250 Ohm input impedance, it integrates seamlessly with 3-wire control circuits. The unit features a 5/16-inch stroke and a force-sensor-limited motor that protects the gear train by automatically stopping once the seating force is reached. As a veteran-grade HVAC valve actuator, it is engineered for compact installations where precision and reliability are mandatory for maintainable zone control. This synchronous motor-driven assembly eliminates the need for field calibration, providing a stable, force-limited stroke of approximately 90 seconds at 60 Hz.

• Precise Shutoff Force: Provides a minimum 22 lb seating force using an internal force sensor to stop the motor, ensuring a reliable seal and compensating for seat wear over time.
• Universal HVAC Compatibility: Ideally suited for VG7000 Series bronze valves and VT Series terminal unit valves, making it a versatile choice for retrofit or new installs.
• Simplified 3-Wire Installation: The 3-wire floating control design reduces wiring complexity and installation time in crowded unit vent or baseboard enclosures.
• High-Torque Performance: The synchronous motor maintains constant speed and predictable timing (90 seconds at 60 Hz) for accurate proportional-like positioning without a feedback pot.
• Durable Non-Spring Return: High-impedance 24 VAC electric actuator mechanism stays in its last position upon power loss, maintaining current flow rates in critical heating loops.

Is the VA-8020-1 compatible with proportional 0-10V signals?
No, this model is strictly for 3-wire floating/incremental control. For 0-10V or 4-20mA applications, a proportional series actuator like the VA-7152 would be required.

Can this actuator be used on steam valves?
The VA-8020-1 is primarily designed for water service in HVAC applications. Always verify the maximum media temperature and valve body rating; typically, these are used for hot or chilled water up to 195°F.

Does this unit require manual calibration after mounting?
No manual calibration of the force sensor is needed. Once installed on the proper VG7000 or VB-5x39 series valve, the internal lever automatically detects the 22 lb shutoff limit.

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.