Johnson Controls VG1845BN+943BUA 3/4" Three-Way Ball Valve with Spring Return Actuator 11.7 Cv

The Johnson Controls VG1845BN+943BUA is a factory-assembled combination of a 3/4-inch, three-way, stainless steel trim forged brass ball valve (VG1845BN) paired with a VA9203-BUA-2 series spring return electric actuator (943BUA). This valve-and-actuator assembly is engineered for precise on/off flow control of hot water, chilled water, and 50% glycol solutions in commercial and industrial HVAC systems.

The VG1845BN valve belongs to the Johnson Controls VG1000 Series, featuring a characterized insert designed for equal percentage flow control with a Cv rating of 11.7 and a maximum closeoff pressure of 200 psi. The stainless steel ball and stem construction ensures durability and corrosion resistance across a wide range of working pressures up to 580 psi for water service.

The integrated 943BUA actuator is a two-position (on/off), spring return, direct-coupled actuator with a wide-range line voltage input of 85–264 VAC, making it compatible with virtually any standard electrical supply without the need for a transformer. The spring return mechanism provides automatic failsafe closure (normally closed) on loss of power, ensuring system safety and fluid shutoff during power interruptions.

Key Features:

• 3/4" three-way forged brass valve body with stainless steel ball and stem trim
• Flow coefficient (Cv): 11.7 — equal percentage characterized flow control
• Maximum closeoff pressure: 200 psi
• Safe working pressure: 580 psi (water service)
• Maximum water temperature: 284°F (140°C)
• Two-position (on/off) spring return actuator — normally closed (NC) fail position
• Wide-range line voltage input: 85–264 VAC, 50/60 Hz — no transformer required
• Direct-coupled, factory-mounted actuator for quick installation
• 27 lb·in torque output for reliable valve positioning
• Compatible with Johnson Controls VG1000 Series ball valves and building automation systems (BAS)

The VG1845BN+943BUA is ideal for use in variable air volume (VAV) systems, fan coil units, air handling units, and other HVAC hydronic applications where reliable two-position zone control is required. The direct-coupled design eliminates linkages and simplifies installation and maintenance.