Johnson Controls VG1845ANH943BUA 1/2" 3-Way Ball Valve Assembly 11.7Cv Spring Return On/Off Normally Closed

The Johnson Controls VG1845ANH943BUA is a factory-assembled 1/2-inch three-way ball valve and spring-return electric actuator combination from the VG1000 Series, engineered for precise flow control of hot water, chilled water, and glycol solutions in commercial HVAC systems.

The VG1845 valve body features a 1/2-inch NPT end connection, stainless steel ball and stem trim, a high-temperature linkage kit, and a flow coefficient (Cv) of 11.7, providing high-capacity flow performance in a compact half-inch form factor. The three-way configuration enables diverting or mixing applications within hydronic systems.

The factory-mounted VA9203-BUA spring-return electric actuator operates on a wide voltage range of 85–264V AC, making it compatible with virtually any standard power supply without requiring a transformer. The actuator provides two-position (on/off) control and is configured as normally closed (NC), with the spring driving the valve closed upon a loss of power for fail-safe operation. This assembly ships without an end switch.

Key Features:

• 1/2-inch NPT female threaded end connections
• Three-way ball valve — diverting or mixing capable
• Flow coefficient: 11.7 Cv
• Stainless steel ball, stem, and trim
• High-temperature linkage kit included
• Spring-return actuator: fails to closed (normally closed)
• On/Off (two-position) control
• Wide input voltage: 85–264V AC, 50/60 Hz
• No end switch included
• Factory-assembled and tested
• Fluid temperature range: -22°F to 212°F (-30°C to 100°C)
• Not rated for steam service

The VG1845ANH943BUA is ideal for zone control, fan coil units, air handling units, and other HVAC hydronic applications requiring reliable two-position flow control with automatic fail-safe closure.