Johnson Controls VA7830-HGA-2 Spring Return Direct Coupled Globe Valve Actuator

Description

Johnson Controls VA7830-HGA-2 Spring Return Direct Coupled Globe Valve Actuator

The Johnson Controls VA7830-HGA-2 is a high-performance, direct coupled globe valve actuator engineered for precise hydronic and HVAC system control. Designed to deliver reliable two-position, floating, or proportional control, this actuator accommodates a wide range of control signal inputs and provides robust spring return functionality for fail-safe stem-down operation. The 48″ cable and manual override feature make installation and commissioning straightforward in commercial and industrial environments.

Control & Signal Compatibility

• Operating voltage: 24 Vac
• Control modes: Two-position, floating, and proportional
• Proportional input signals: 0–10 Vdc, 2–10 Vdc, (0)4–20 mA

Mechanical Specifications

• Torque output: 180 lb-in
• Stroke range: 5/16″ – 1″
• Cable length: 48″
• Mounting: Direct coupled to globe valve stem
• Spring return action: Stem down on power loss (fail-safe)

Key Features

• Spring return fail-safe design ensures stem-down position on loss of power
• Manual override for easy setup, commissioning, and emergency operation
• Versatile control signal compatibility — two-position, floating, or proportional
• Direct coupled design eliminates linkage for simplified installation and reduced maintenance
• Broad stroke range (5/16″ to 1″) accommodates a variety of globe valve configurations
• 48″ cable provides installation flexibility in tight mechanical spaces

Typical Applications

• Hydronic heating and cooling coil control
• Commercial HVAC air handling units
• Building automation and energy management systems
• Fan coil unit valve control
• Variable flow hydronic systems