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

The Johnson Controls VG1845BN+943BGB is a 3/4-inch, three-way forged brass ball valve with stainless steel trim, factory-mounted with a 943BGB spring return electric actuator for two-position on/off control in HVAC hydronic systems. Part of the VG1000 Series, this valve and actuator combination is engineered to regulate the flow of hot water, chilled water, or 50% glycol solutions in response to a system controller.

Key Specifications:

• Valve Size: 3/4 in. (DN20) NPT threaded end connections
• Body Pattern: Three-way mixing or diverting
• Flow Coefficient: 11.7 Cv (Port A)
• Flow Characteristic: Equal percentage
• Supply Voltage: 24 VAC
• Control Signal: Two-position (on/off)
• Actuator Type: Spring return — fail-safe, normally closed (NC)
• Maximum Closeoff Pressure: 200 psid (1378 kPa)
• Static Pressure Rating: 580 psig (3996 kPa)
• Leakage Rating: ANSI Class IV (0.01% of Cv)
• Trim Material: Stainless steel ball and stem
• Body Material: Forged brass
• Life Expectancy: 200,000+ leak-free full stroke cycles

Features & Benefits:

• Forged brass body — delivers a 580 psig static pressure rating for dependable long-term performance
• Stainless steel trim — rated for use with 15 psig low-pressure steam in addition to chilled and hot water
• Spring return fail-safe actuator — automatically drives the valve to the normally closed (NC) position upon loss of power
• Equal percentage flow characteristic — provides accurate, stable control across all load conditions
• Maintenance-free design — performs in excess of 200,000 full stroke cycles even in iron-oxide contaminated water
• Direct-coupled actuator — factory-mounted for quick installation, no linkage assembly required
• 500:1 rangeability — ensures accurate flow regulation across a wide range of system conditions

The VG1845BN+943BGB is compatible with Johnson Controls VA9203 and VA9208 Series spring return electric actuators and is suitable for mixing or diverting hydronic HVAC applications. The characterized ball insert delivers Cv ratings consistent with traditional globe valves, making it a reliable drop-in solution for commercial building automation and temperature control systems.