VA7810-HGA-2 Johnson Controls Actuator

Overview

The Johnson Controls VA7810-HGA-2 is a non-spring return electric valve actuator designed to provide direct-coupled, modulating control of globe valves within heating, ventilating, and air conditioning (HVAC) systems. It delivers a minimum linear output force of 180 lb (800 N) to operate Johnson Controls VG7000 Series bronze globe valves, offering fail-in-place operation upon loss of power.

Features

• Direct mount capability to VG7000 Series bronze globe valves with a linear stroke of up to 1 inch.
• Brushless motor ensures low energy consumption and an extended operational life.
• Automatic stroke adjustment for simplified, precise commissioning and servicing.
• Standard manual override via a 5 mm Allen wrench allows positioning in the absence of power.
• Force-controlled motor shut-off protects the valve from excessive forces and minimizes wear.
• Built-in status LED provides visual feedback on actuator status and aids diagnostics.

Specifications

• Supply Voltage: 24 VAC
• Control Signal: Modulating/Proportional (0 to 10 VDC, 2 to 10 VDC, 0 to 20 mA, or 4 to 20 mA), Floating, and Two-Position
• Output Force: 180 lb-in (800 N) minimum
• Enclosure Rating: IP54 protection
• Stroke Range: 5/16 inch to 1 inch linear stroke
• Nominal Run Time: Selectable speeds yielding 24/48 seconds or 38/76 seconds depending on configuration
• Fail-Safe Mode: Non-spring return (fail-in-place)
• Wiring Connection: 48-inch (1.5 m) integrated cable

Applications

The VA7810-HGA-2 actuator is used in HVAC systems to regulate the flow of saturated steam, hot water, and chilled water. It is designed to interface directly with threaded-stem VG7000 Series bronze globe valves ranging from 1/2 to 2 inches, responding to electronic controllers for valve sequencing, proportional modulation, or simple floating point adjustments.