VA7830-HGC-2 Johnson Controls Actuator

Overview

The Johnson Controls VA7830-HGC-2 is a high-performance, direct-coupled electric globe valve actuator designed for precise flow control in commercial HVACR and building automation systems. Engineered to operate VG7000 Series bronze control valves, this versatile unit provides reliable fail-safe spring return operation, driving the actuator stem to a fully extended, stem-down position upon loss of power. It accommodates an array of control profiles including proportional, floating, and on/off signals, making it highly adaptable to various electronic controller requirements.

Features

• Universal Control Compatibility: Field-selectable via internal DIP switches to support 0-10 VDC, 2-10 VDC, or 4-20 mA proportional signals, as well as floating and two-position control.
• Fail-Safe Protection: Mechanical spring return mechanism automatically drives the stem down to ensure critical system protection during power failure.
• Integrated Auxiliary Switches: Equipped with two built-in SPDT auxiliary switches for seamless status feedback, sequencing, or interlocking with secondary equipment.
• Manual Override: Features an integrated manual override to allow convenient commissioning and manual positioning without electrical input.
• High Reliability: Built with a brushless motor and force-controlled motor shut-off to prevent motor strain and maximize service life.
• Automatic Calibration: Self-calibrating stroke mechanism automatically identifies valve end-stops to significantly reduce installation and setup time.

Specifications

• Supply Voltage: 24 VAC (nominal), 50/60 Hz
• Force/Torque Output: 180 lb-in (800 N)
• Linear Stroke Capacity: 5/16 inch to 1 inch (8 mm to 25 mm)
• Cycle Time: 76 seconds
• Enclosure Rating: IP54 / NEMA 2 (durable protection against debris and moisture)
• Minimum Operating Temperature: 23°F (-5°C)
• Electrical Connection: Includes a 48-inch halogen-free cable
• Feedback Signal: Available 0-10 VDC or 2-10 VDC position indication

Applications

• Designed for the precise control of hot water, chilled water, and glycol solutions (up to 50%) in commercial HVAC systems.
• Suitable for steam applications up to 35 psig in hydronic heating networks.
• Ideal for integration into Building Automation Systems (BAS) requiring automated status feedback and multi-position valve adjustments.
• Engineered specifically for operating Johnson Controls VG7000 Series bronze control valves ranging from 1/2 inch to 2 inches in size.