Johnson Controls VG2231VM292NGGA Valve Assembly

The Johnson Controls VG2231VM292NGGA is a heavy-duty 4-inch 2-way normally open flanged globe valve designed for precise flow control in demanding hydronic systems. Built with a rugged cast iron body and durable brass trim, this assembly handles high-capacity chilled or hot water applications with a 150 Cv rating. The ANSI Class 125 flat-faced flange connection ensures a secure fit for industrial piping. Performance is driven by a tandem mount spring return actuator, delivering fail-safe reliability during power loss. This modulating control valve supports versatile input signals, including 0-10 Vdc, 2-10 Vdc, and 4-20 mA (with the included 500-ohm resistor), making it compatible with most Building Automation Systems (BAS). The modified linear flow characteristic provides stable modulation throughout the stroke, reducing hunting and enhancing loop stability in 24Vac or 24Vdc environments. This unit utilizes a 3/8-inch threaded stem, optimized for high close-off pressure requirements in commercial HVACR infrastructure.

• High-Flow Capacity: The 150 Cv rating and 4-inch port size provide efficient HVAC flow control for large-scale chillers and boilers.
• Fail-Safe Protection: Integrated spring return tandem mount actuator ensures the valve returns to its normally open position during power interruptions.
• Universal Modulation: Multi-signal compatibility allows for seamless integration into legacy and modern Johnson Controls VG2000 series setups.
• Durable Construction: The combination of cast iron and brass trim provides long-term resistance to wear in closed-loop systems.

Common Questions:

What is the fail-safe position of the VG2231VM292NGGA? This assembly is configured as normally open, meaning it will fully open via spring return if the 24V power source is disconnected.

Can this valve be used for steam applications? This specific configuration with brass trim is primarily rated for water and glycol solutions; check fluid temperature limits against HVAC globe valve specifications for your specific media.

How do I wire the 4-20mA signal? Use the provided 500-ohm resistor across the input terminals to convert the current signal to the required voltage for the modulating actuator.

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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.