Johnson Controls VG2231UM292NGGA Valve Assembly

The Johnson Controls VG2231UM292NGGA is a heavy-duty 3-inch 2-way normally open globe valve assembly engineered for precise throttling in high-demand HVACR systems. Built with a rugged cast iron body and durable brass trim, this assembly is designed to handle chilled water, hot water, and 35 psig saturated steam applications. The unit features an ANSI Class 125 flat-faced flange connection and a 3/8-inch threaded stem, providing a robust interface for commercial piping. It utilizes a tandem mount spring return actuator that supports 0-10Vdc, 2-10Vdc, and 4-20mA (with included 500-ohm resistor) control signals, ensuring seamless integration with modern building automation systems. With an 83 Cv rating and modified linear flow characteristics, this valve delivers stable performance and tight shut-off even in high-pressure drop environments. The spring return fail-safe operation ensures the valve defaults to the open position upon loss of 24Vac/Vdc power, protecting critical equipment and maintaining system flow.

Key Benefits

• Precise Flow Control: The 83 Cv capacity and modified linear flow profile allow for accurate temperature regulation in large-scale air handling units and heat exchangers.
• Versatile Actuation: Proportional control with 0-10Vdc and 4-20mA compatibility ensures this VG2000 series valve works with virtually any controller.
• Steam Rated: Robust materials of construction support 35 psig saturated steam, making it ideal for district heating and industrial processes.
• Fail-Safe Reliability: The mechanical spring return actuator provides a guaranteed "open" state during power failures, preventing dead-heading in many piping configurations.
• Heavy-Duty Connection: ANSI Class 125 flanged construction ensures a leak-resistant, structural fit for 3-inch commercial lines.

Common Questions

What media can the VG2231UM292NGGA handle?
This assembly is rated for hot water, chilled water, 50% glycol solutions, and saturated steam up to 35 psig within a temperature range of 35°F to 281°F.

How does the fail-safe function work on this model?
This is a normally open (NO) assembly. The internal spring mechanism will drive the valve to the fully open position if the 24V power supply is interrupted.

What is the close-off pressure rating for this 3-inch valve?
When paired with the M9220 series tandem actuator, this valve provides a high close-off pressure (typically up to 66 psig depending on specific application parameters) to prevent low-load leakage.

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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.