Johnson Controls VG1841CN Valve

The Johnson Controls VG1841CN Valve is a high-performance 1-inch NPT three-way ball valve designed for precise flow regulation in HVAC hydronic systems. Featuring a robust forged brass body and plated brass trim, this valve is engineered to handle hot water, chilled water, and 50% glycol solutions with a maximum static pressure rating of 580 psig. The integrated equal percentage flow characteristic ensures linear heat transfer in coil applications, providing stable control even under varying load conditions. With a flow coefficient (Cv) of 11.7 and 500:1 rangeability, it delivers the accuracy required for sophisticated building automation. This VG1000 Series component is built for longevity, rated for 200,000 failure-free cycles in iron-oxide contaminated water. It supports direct mounting to VA9104, VA9203, and VA9300 series electric actuators for seamless on/off or proportional control. Technician-focused features include graphite-reinforced PTFE seats and double EPDM O-ring stem seals to prevent leakage and operational downtime.

• Precise Hydronic Control: The specialized characterizing disk provides equal percentage flow, matching the performance of traditional globe valves with the ease of a ball valve.
• Durable Construction: Features a chrome-plated brass ball and stem for superior wear resistance in demanding hot and chilled water environments.
• High Closeoff Pressure: Provides a tight shutoff with a 200 psi close-off pressure rating (ANSI Class IV leakage), ensuring system efficiency.
• Maintenance-Free Reliability: Designed to exceed 200,000 full-stroke cycles, reducing truck rolls and long-term service costs on the job site.

What actuators are compatible with the VG1841CN?
This valve is designed for direct mounting to Johnson Controls VA9104, VA9203, and VA9300 series actuators, supporting both spring and non-spring return configurations.

What is the temperature range for this specific brass-trim model?
The VG1841CN with brass trim is rated for fluid temperatures ranging from 23?F to 203?F (-5?C to 95?C). Please note it is not rated for steam service.

How does the three-way configuration function in this series?
This is a mixing or diverting valve; the in-line Port A (coil port) follows an equal percentage flow curve, while the bypass Port B provides a linear flow characteristic to maintain balanced total flow through the system.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.