Description
The Johnson Controls VA7810-HGC-2 is a heavy-duty, non-spring return, direct coupled globe valve actuator engineered for precise flow control in commercial HVAC and building automation applications. Designed to accept a wide range of control signals and deliver robust torque output, this actuator provides the flexibility and reliability demanded by modern hydronic and chilled/hot water systems.
Control Signal Compatibility
- Two-position control
- Floating (tri-state) control
- Proportional control: 0–10 Vdc
- Proportional control: 2–10 Vdc
- Proportional control: (0)4–20 mA
Electrical Specifications
- Supply voltage: 24 Vac
- 48″ lead cable for flexible installation routing
Mechanical Specifications
- Torque output: 180 lb-in — delivers reliable force for demanding valve applications
- Stroke range: 5/16″ – 1″ to accommodate various globe valve body sizes
- Non-spring return design — actuator holds last position on power loss
- Direct coupled mounting for quick, secure installation without linkage hardware
Auxiliary & Override Features
- Manual override — allows valve positioning during commissioning or power outages
- 1 SPDT auxiliary switch — enables end-of-travel feedback or interlocking with other system controls
Key Benefits
- Multi-signal input flexibility reduces the need for separate actuator SKUs across different control systems
- High torque rating ensures reliable operation even with high-differential-pressure globe valves
- Non-spring return operation conserves energy by eliminating continuous spring tension
- Direct coupling simplifies installation and reduces mechanical play for more accurate valve positioning
- SPDT auxiliary switch supports system integration, alarming, or sequencing logic
- Manual override supports commissioning and emergency operation without tools
Typical Applications
- Chilled water and hot water coil control
- Commercial AHU and FCU valve control
- Building automation system (BAS/BMS) integration
- Variable flow hydronic systems
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