Johnson Controls VG1845BNH943GGA 3/4" 3-Way NPT Ball Valve Assembly 11.7 Cv 24V Proportional Spring Return

The Johnson Controls VG1845BNH943GGA is a factory-assembled, 3/4-inch three-way NPT ball valve and electric actuator assembly from the VG1845 Series, designed for precise flow control of hot water, chilled water, and other compatible hydronic fluids in commercial HVAC systems. The assembly ships ready to install, eliminating field-mounting of the actuator and reducing installation time.

Key Features:

• Valve Size: 3/4 inch NPT threaded connections
• Configuration: Three-way mixing/diverting ball valve
• Flow Coefficient (Cv): 11.7 — delivers reliable, accurate flow regulation under varying load conditions
• Control Signal: Proportional (0–10 VDC), allowing modulating control for precise temperature management
• Actuator Operation: Spring Return (SR) — Normally Closed (NC) failsafe position; valve returns to closed position on loss of power or signal
• Supply Voltage: 24V AC/DC
• Valve Body: Forged brass construction with chrome-plated brass ball and stem assembly
• Seats: Graphite-reinforced PTFE (polytetrafluoroethylene) for enhanced wear resistance and long service life
• Fluid Temperature Range: 23°F to 203°F (-5°C to 95°C) — suitable for both chilled and hot water applications
• Static Pressure Rating: Up to 580 psig
• Rangeability: 500:1 for accurate control across all load conditions
• Maintenance-Free Design: Rated for in excess of 200,000 full stroke cycles in iron-oxide contaminated water
• Factory-Mounted Actuator: Pre-assembled and tested — no field linkage required

The VG1845BNH943GGA is part of Johnson Controls' VG1845 Series of 3/4-inch three-way NPT ball valves paired with proportional spring-return electric actuators. The spring-return, normally closed (NC) failsafe ensures the valve closes automatically upon signal or power loss, making it ideal for safety-critical HVAC control applications. The 24V proportional actuator accepts a 0–10 VDC control signal for seamless integration with building automation systems (BAS). The forged brass body and PTFE seats provide long-term reliability in commercial hydronic heating and cooling systems.