Description
The Honeywell ML7420A3063 is a non-spring return, direct coupled globe valve actuator engineered for precise modulating control in commercial HVAC and building automation applications. Designed to mount directly to compatible globe valve bodies, this actuator delivers reliable, repeatable positioning without the need for a return spring, making it ideal for two-position or proportional control of heating and cooling coil valves, heat exchangers, and hydronic systems.
Electrical Specifications
- Supply Voltage: 24 VAC
- Control Input Signal: 0/2–10 VDC
- Position Feedback Signal: 2–10 VDC
Mechanical Specifications
- Stem Force: 135 lbf
- Nominal Drive Time: 30 seconds
- Stroke: 3/4 inch
- Bonnet Size: 1-3/8 inch
- Actuator Type: Non-Spring Return, Direct Coupled
- Manual Operator: Included for manual override capability
Environmental Ratings
- Ambient Temperature Range: 14°F to 122°F (–10°C to 50°C)
- Relative Humidity: 5–95% RH (non-condensing)
Key Features & Benefits
- Non-spring return design holds last valve position on power loss, reducing energy waste
- Direct coupled mounting simplifies installation and eliminates linkage hardware
- 2–10 VDC feedback signal enables closed-loop position verification with building automation systems
- Manual operator allows valve positioning during commissioning or power outages
- 135 lbf stem force provides positive shutoff and reliable modulation across a wide range of valve sizes
- 30-second nominal drive time delivers smooth, stable control response
- Compatible with DDC and BAS controllers accepting 0/2–10 VDC command signals
- Wide ambient temperature range suits mechanical rooms, rooftop units, and indoor air handling applications
Typical Applications
- Heating and cooling coil control valves
- Hydronic heating and chilled water systems
- Air handling units and fan coil units
- Building automation and DDC control systems
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