Johnson Controls VG7842ST+823C01 2-Inch 3-Way 46Cv Linear Globe Valve with Pneumatic Positioner Actuator 3-7 PSI

The Johnson Controls VG7842ST+823C01 is a factory-assembled 2-inch, 3-way linear globe valve paired with a pneumatic actuator and positioner for precise flow control in commercial HVAC hydronic systems. Designed for mixing or diverting service, this valve assembly is engineered to deliver accurate, repeatable control of hot water, chilled water, and other compatible hydronic fluids.

The VG7842ST valve body features a 2-inch NPT connection with a high-capacity 46 Cv flow coefficient and a linear flow characteristic, making it well-suited for applications requiring proportional control response. The 3-way configuration supports both mixing and diverting piping arrangements.

The integrated 823C01 pneumatic actuator with positioner accepts a 3–7 PSI pneumatic control signal, providing smooth, modulating actuation across the full valve stroke. The positioner ensures accurate valve positioning in response to varying supply pressure conditions, improving control performance in demanding building automation applications.

Key Features:

• Valve Size: 2-inch
• Configuration: 3-Way (mixing/diverting)
• Flow Coefficient (Cv): 46
• Flow Characteristic: Linear
• Actuator Type: Pneumatic with positioner
• Control Signal: 3–7 PSI pneumatic input
• End Connection: NPT threaded
• Application: Commercial HVAC hydronic systems — chilled water, hot water, and heating/cooling coil service
• Factory Assembled: Valve and actuator shipped as a complete, ready-to-install assembly

This Johnson Controls valve and actuator assembly is ideal for use in variable air volume (VAV) systems, fan coil units, and air handling unit coil control in commercial and institutional building automation environments. It integrates seamlessly with pneumatic building control systems operating on standard instrument air supply.