Honeywell ML7984A4009 Valve Actuator

The Honeywell ML7984A4009 Valve Actuator is a non-spring return direct-coupled actuator engineered for high-performance modulating control within commercial HVACR systems. Specifically designed for Honeywell V5011 two-way and V5013 three-way globe valves, this self-contained motorized linkage provides a robust 160 lbf rated force to ensure positive valve seat closing against high differential pressures. It accepts a wide range of control signals, including 2-10 VDC, 4-20 mA, and 135 Ohm modulating signals, making it a versatile drop-in solution for building automation systems (BAS).

Built for the rigors of the field, the unit features microprocessor-based digital position sensing and a self-adjusting linkage that automatically adapts to valve strokes between 1/2" and 1". The NEMA 3R rain-proof cover and UV-stabilized housing support both indoor and outdoor installations. Contractors benefit from the 63-second drive timing and the ability to share a common 24 VAC transformer across multiple devices, simplifying electrical layouts in complex mechanical rooms.

• Universal Signal Compatibility: Supports 2-10 VDC, 4-20 mA, and Series 90 modulating controllers for seamless integration.
• Automatic Stroke Calibration: The self-adjusting linkage eliminates manual setup by automatically calibrated to strokes from 1/2" to 1".
• High Seating Force: Delivers a consistent 160 lbf (710 N) of force, ensuring reliable shut-off in high-demand hydronic applications.
• Flexible Mounting: Features a multi-pose mounting design and compact footprint for installation in tight mechanical closets.
• Field Protection: Equipped with electronic current sensing to prevent motor overload and internal damage during standard operation.

Is the ML7984A4009 compatible with existing Series 90 controllers?
Yes, this actuator is designed to interface with 135 Ohm Series 90 modulating signals, as well as electronic "Super Mod" signals, providing an excellent solution for retrofitting older pneumatic or analog systems.

What happens during a power failure?
Being a non-spring return actuator, the Honeywell ML7984A4009 will maintain its last commanded position upon loss of power (fail-in-place), which is ideal for systems where a specific fail-safe open or closed state is managed at the controller level.

Which valve bodies can I mount this on directly?
This direct-coupled actuator screws directly onto 1/4-28 UNF threaded stems found on Honeywell V5011N, V5013N, and VGF Series globe valves up to 3 inches in size without needing additional linkages.

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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.