VG7882ES+8122G Johnson Controls Valve / Actuator

Overview

The Johnson Controls VG7882ES+8122G is a high-quality 3-way mixing valve assembly factory-coupled with a VA-8122-1 proportional electric actuator. Designed for commercial and industrial HVAC systems, this assembly provides precise flow modulation of hot and cold water to maintain stable environmental conditions. It features a cast bronze body with brass trim and a union sweat connection for standard 1/2-inch nominal tubing.

Features

• 3-way mixing configuration with a 1.8 Cv flow coefficient for precise fluid control.
• Non-spring-return electric actuator maintains its last position upon loss of power.
• AUTOCAL pushbutton allows the actuator to automatically define the control input range over the stroke.
• Selectable direction of action (drive down or drive up) provides enhanced application flexibility.
• Integrated LED simplifies commissioning and displays the real-time operating status.
• Designed with a cast bronze body, brass linear trim, and a slotted stem for long-term reliability.

Specifications

• Valve Size: 1/2 inch
• Connection Type: Union Sweat for 1/2 in. Nominal Tubing
• Flow Coefficient: 1.8 Cv
• Operating Voltage: 24 VAC at 50/60 Hz
• Control Type: Proportional / Modulating (Non-Spring Return)
• Input Signals: Jumper selectable 0(2) to 10 VDC, 0(4) to 20 VDC, or 0(4) to 20 mA
• Seating/Shutoff Force: 22 lb minimum
• Stroke Length: Up to 5/16 inch
• Enclosure Rating: NEMA 1 (IP20)
• Maximum Media Temperature: 195°F (90°C) water (not rated for steam)

Applications

• Hydronic heating and cooling systems requiring precise water temperature mixing.
• Commercial and residential HVAC building automation systems.
• Air handling units and fan coil units requiring modulated flow control.
• Direct replacement or retrofit setups for commercial terminal units.