Johnson Controls VG2231UM Valve

The Johnson Controls VG2231UM is a high-performance 3-inch 2-way globe valve designed for precise HVAC flow control within commercial building automation systems. Engineered with a rugged cast iron body and durable brass trim, this ANSI Class 125 flanged valve is built to handle hot water, chilled water, and saturated steam applications up to 35 psig. Featuring a modified linear flow characteristic and an 83 Cv rating, the VG2231UM ensures accurate modulation and reliable performance in demanding hydronic environments. The 3/8" threaded stem operates with a push down to close (PDTC) action and is normally open, making it compatible with a wide range of electric and pneumatic actuators, including the M9000 and MP8000 series. Integrated Ethylene Propylene Terpolymer (EPT) ring packs specify a high standard for leakage control and longevity under thermal cycling. This valve provides a 7.7:1 rangeability ratio, allowing contractors to maintain tight control over variable loads while ensuring a low 0.1% maximum flow leakage rate.

• Regulates water and steam efficiently with high-temperature resistance up to 281°F.
• ANSI Class 125 flat-faced flange connections ensure secure, standardized installation in existing piping.
• Normally open valve configuration provides a failsafe position for critical heating or cooling loops.
• Modified linear flow allows for consistent, predictable control response across the entire stroke.
• Compatible with multiple actuator mounting options for seamless integration into Building Automation Systems (BAS).

What is the maximum pressure rating for steam service?
The VG2231UM is rated for saturated steam at 35 psig (241 kPa) at temperatures up to 281°F.

Which actuators are compatible with this 3-inch globe valve?
This unit is designed for use with Johnson Controls M9000 series electric actuators and MP8000 series pneumatic actuators, provided the correct linkage is utilized.

Can the brass trim be used with glycol solutions?
Yes, the cast iron body and brass trim are suitable for water systems containing up to a 50% glycol concentration.

This item must be shipped via trucking. Please contact us for a freight quote.

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.