Johnson Controls VG1845AN+923GGA 1/2 in. Three-Way Ball Valve Assembly with Spring Return Actuator, 11.7 Cv

The Johnson Controls VG1845AN+923GGA is a factory-assembled, three-way ball valve and spring return electric actuator combination designed for precise flow control in commercial HVAC applications. The assembly pairs the VG1845AN 1/2 in. NPT forged brass ball valve body with the VA9203-GGA-2Z proportional spring return actuator, delivering a ready-to-install solution for hot water, chilled water, and low-pressure steam systems.

Valve Specifications:

• Valve Size: 1/2 in. (DN15) NPT end connections
• Body Pattern: Three-way mixing or diverting
• Flow Coefficient (Cv): 11.7 (main port); 5.8 (bypass port)
• Flow Characteristic: Equal percentage
• Body Material: Forged brass
• Ball & Stem: Stainless steel ball with blowout-proof stem
• Seat Material: Graphite-reinforced PTFE with EPDM O-ring backing
• Valve Body Pressure Rating: 580 psig (4,000 kPa) at 203°F (PN40)
• Maximum Closeoff Pressure (Three-Way): 50 psid (345 kPa)
• Leakage Rating: ANSI/FCI 70-2, Class 4 (0.01% of Cv)
• Fluid Temperature Range: -22°F to 284°F (-30°C to 140°C)
• Media Compatibility: Hot or chilled water, glycol solutions up to 50%, low-pressure steam (stainless trim models)

Actuator Specifications (VA9203-GGA-2Z):

• Actuator Type: Proportional, spring return (fail-safe)
• Fail-Safe Action: Spring return — Port A closes on power loss (two-way normally open)
• Supply Voltage: 24 VAC/DC
• Control Signal: 0–10 VDC proportional
• Torque Rating: 80 lb·in (9 N·m)
• Rotation Range: Adjustable 30° to 90°, CW or CCW
• Rotation Time: 60 seconds at 60 Hz / 72 seconds at 50 Hz (90°)
• Cycle Life: 100,000 full cycles; 2,500,000 repositions
• Enclosure Rating: NEMA 2, IP32
• Ambient Operating Temperature: -4°F to 125°F (-20°C to 52°C), 90% RH max, non-condensing
• Audible Noise: 35 dBA maximum at 1 m
• Compliance: UL 873 Listed (File E27734); CSA C22.2 No. 139 Certified (File LR85083); CE Mark

The VG1845 Series uses a specially engineered, graphite-reinforced PTFE seat with a flexible seat design backed by EPDM O-rings, which significantly reduces operating torque and allows the use of a compact, direct-mount electric actuator. The assembly is rated for 200 psid maximum closeoff pressure (two-way configurations) and is well-suited for on/off, floating, or proportional control strategies in building automation systems.