Johnson Controls VG2431TM+843E00 Valve Assembly

The Johnson Controls VG2431TM+843E00 is an industrial-grade 2-way normally closed globe valve assembly designed for precise HVAC water and steam control. Built with a rugged ANSI Class 125 flat-faced flange and a durable cast iron body, this 2-1/2 inch valve is optimized for high-capacity applications requiring a 54 Cv flow coefficient. This model is the direct field replacement for the legacy V-5462-6, ensuring seamless integration into existing pneumatic systems without extensive repiping.

The assembly features a factory-fitted MP84 pneumatic actuator with a 9-13 PSI spring range and spring return safety functionality, ensuring the valve defaults to the closed position upon loss of air pressure. The brass trim and 3/8 inch threaded stem provide reliable long-term performance and high close-off pressure ratings. Its modified linear flow characteristic allows for stable modulation in chilled water, hot water, and 50% glycol solutions, as well as saturated steam applications up to 35 psig.

• Direct Replacement: Engineered as a drop-in V-5462-6 replacement for legacy Johnson Controls installations.
• Heavy-Duty Construction: Features an ANSI Class 125 flange and an iron body rated for 175 psig static pressure.
• Precise Modulation: Provides a modified linear flow characteristic for accurate environmental control.
• Fail-Safe Security: Equipped with a spring return pneumatic actuator to ensure a normally closed fail-safe state.
• Wide Temp Range: Suitable for fluid temperatures ranging from 35°F to 281°F.

• Is this compatible with steam systems? Yes, the VG2431TM+843E00 is rated for saturated steam up to 35 psig at 281°F.
• What is the failure state of this assembly? This is a normally closed (N.C.) assembly; the spring return pushes the valve shut if the pneumatic signal is lost.
• Can I use this for glycol-based systems? Absolutely. It is designed for water and 50% glycol solutions commonly found in commercial HVAC loops.

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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.