Johnson Controls VG1845ANH943BGB 1/2 in. 3-Way Spring Return Ball Valve Assembly 11.7 Cv 24V On/Off NC

The Johnson Controls VG1845ANH943BGB is a factory-assembled, 3-way spring return ball valve assembly from the VG1845 Series. Designed for HVAC hydronic system control, this 1/2-inch NPT assembly pairs a forged brass ball valve body with a VA9203-BGB-2 series spring return electric actuator for reliable on/off control at 24 VAC.

The valve features a Cv of 11.7 and is rated for up to 200 psid closeoff pressure, making it well-suited for demanding chilled water, hot water, and glycol system applications. The spring return mechanism provides fail-safe normally closed (NC) operation — on loss of power, Port A closes and returns to the safe position via spring force.

Key Features:

• Valve Size: 1/2 in. FNPT (female NPT) end connections
• Configuration: 3-way mixing/diverting, Spring Return Clockwise — Port A Closed (Normally Closed)
• Flow Coefficient: Cv = 11.7 (Port A) / 5.8 (Port B)
• Actuator Control: On/Off, 24 VAC
• Actuator Type: VA9203-BGB-2 Spring Return Electric Actuator (factory-mounted)
• Fail-Safe Action: Spring return to normally closed (NC) position
• Closeoff Pressure: 200 psid (1,378 kPa)
• Leakage Rating: ANSI/FCI 70-2, Class IV — 0.01% of maximum flow (control port); 1% bypass port
• Body Material: Forged brass
• Trim Material: Stainless steel ball, nickel-plated brass stem
• Seat Material: Graphite-reinforced PTFE with EPDM O-ring backing
• Media Compatibility: Hot water, chilled water, and glycol solutions up to 50%
• Life Expectancy: 200,000 leak-free cycles
• Fluid Temperature Range: -22°F to 212°F (-30°C to 100°C) — not rated for steam service
• Supply Voltage: 24 VAC
• Flow Characteristic: Equal percentage (control port), linear (bypass port)

The VG1845 Series is maintenance-free and backed by a 5-year warranty. The graphite-reinforced PTFE seat design with flexible PTFE and EPDM O-ring backing significantly reduces operating torque, ensuring long-lasting, leak-free performance in HVAC control applications.