Johnson Controls VG1841BG Valve

The Johnson Controls VG1841BG is a heavy-duty 3/4 inch 3-way ball valve engineered for precise proportional control in commercial HVACR systems. Built with a forged brass body and plated brass trim, this valve is designed to handle chilled water, hot water, and up to 50% glycol solutions with a flow coefficient of 4.7 Cv. The specialized internal characterized insert ensures an equal percentage flow characteristic, providing the modulation accuracy typically associated with globe valves but with the high-capacity performance of a ball valve. This NPT-threaded unit supports a static pressure rating of 580 psig and a close-off pressure of 200 psid, making it a reliable choice for fan coil units, reheat coils, and unit ventilators. The 3-way mixing or diverting configuration allows for versatile piping layouts, while the EPDM O-rings and graphite-reinforced PTFE seats provide a low-maintenance, leak-free service life exceeding 200,000 cycles. Compatible with VA9104 and VA9203 series actuators, the VG1841BG ensures seamless integration into existing BAS controls.

• Precise Modulation: Features a characterized insert to provide equal percentage flow, ensuring stable temperature control and preventing hunting in the control loop.
• High Pressure Resilience: Rated for a 580 psig static pressure and 200 psid close-off, maintaining tight shut-off in high-demand hydronic applications.
• Durable Construction: The forged brass body and plated brass trim offer superior corrosion resistance and longevity in standard water and glycol systems.
• Ease of Installation: Standard 3/4" NPT threaded connections and a compact profile allow for efficient field mounting and fast actuator coupling.

• Is this valve suitable for steam applications? This specific model features brass trim and is rated for water and glycol; stainless steel trim models are required for low-pressure steam up to 15 psig.
• Which port should be connected to the coil? For three-way mixing applications, Port A must be connected to the coil to utilize the characterization disk for optimal flow control.
• What actuators are compatible with the VG1841BG? It is designed for use with Johnson Controls M9000 and VA9000 series actuators, including both spring and non-spring return options.

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.