Johnson Controls VA-7482-0312 Actuator

The Johnson Controls VA-7482-0312 is a heavy-duty 24V electric valve actuator engineered for precise proportional control in demanding HVAC applications. This unit is the direct technical successor for the VA-7452-90011, providing a seamless field replacement with enhanced reliability. Designed specifically for terminal units like fan coils and chilled ceilings, it delivers a minimum output force of 21.5 lb (96 N). The VA-7482-0312 features an auto-stroke detection system that eliminates manual calibration, allowing the modulating actuator to orient itself to the specific valve stroke automatically. Its compact NEMA 2 enclosure and M28 x 1.5 threaded nut ensure compatibility with VG4000 and VG5000 series zone valves, while the 118-inch (3-meter) 18 AWG cable provides ample reach for complex wiring runs. Built for veteran contractors, this Johnson Controls actuator supports multiple input signals including 0-10 VDC and 4-20 mA, ensuring versatile integration with modern building automation systems.

• Direct Replacement: Fully replaces the legacy VA-7452-90011 without requiring additional mounting kits or hardware.
• Auto-Commissioning: Integrated auto-stroke detection logic simplifies installation by automatically adjusting to the valve's mechanical limits.
• Robust Performance: Rated for fluid temperatures up to 203°F (95°C) and tested for 250,000 full-stroke cycles.
• Field Flexibility: The actuator body can be rotated after mounting to optimize cable entry and accessibility in tight fan coil enclosures.
• Diagnostic LED: Bi-color green/red LED provides immediate visual feedback on operating status and calibration success.

Is the VA-7482-0312 compatible with non-Johnson Controls valves?
Yes, the auto-commissioning feature allowing for variable strokes makes it compatible with most standard terminal unit valves using an M28 x 1.5 mounting thread.

What input signals does this proportional actuator support?
It is field-configurable for several analog signals, including 0-10 VDC, 2-10 VDC, 0-5 VDC, 5-10 VDC, 0-20 mA, and 4-20 mA.

Does this unit have a spring return fail-safe?
No, the VA-7482-0312 is a non-spring return electric actuator. It maintains its last position upon loss of power unless an external fail-safe system is integrated.

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.