Johnson Controls VG7443ST+72CHGA Valve Assembly

The Johnson Controls VG7443ST+72CHGA is a heavy-duty 2-way normally closed valve assembly engineered for precise control of water or steam in commercial HVAC systems. This 2-inch NPT cast bronze body valve features high-grade stainless steel trim, ensuring reliable performance and resistance to corrosion in demanding hydronic applications. With a 46.2 Cv flow coefficient and an equal percentage flow characteristic, it provides exceptional modulating control and energy efficiency. The unit is powered by a 24Vac VA-7200 series actuator, offering a spring return safety function and field-selectable control signals, including 0-10VDC, 4-20mA, or floating configurations. As a direct replacement for the VG7241ST+946HGA, this proportional control valve integrates seamlessly into existing building automation systems. Designed for longevity and high close-off pressure ratings, it remains a standard choice for contractors managing air handling units and heat exchangers where NPT threaded valve connections are required.

Key Benefits

• Field-Selectable Control: Versatile electronics support 0(2)-10VDC, 0(4)-20mA, or two-position input for simplified stocking and installation.
• Fail-Safe Operation: Integrated spring return mechanism ensures the valve returns to a normally closed position during power loss.
• Industrial-Grade Materials: Cast bronze construction paired with stainless steel seating extends service life in high-temperature environments.
• Precise Throttling: Equal percentage flow curves provide stable temperature regulation even at partial loads.
• Direct Retrofit: Specifically designed to replace legacy VG7200 series assemblies without extensive piping modifications.

Common Questions

Is the VG7443ST+72CHGA compatible with existing Johnson Controls controllers?
Yes, the universal electronic input allows this assembly to interface with Metasys and other third-party BAS controllers using standard analog signals.

What is the maximum fluid temperature this valve can handle?
Due to the stainless steel trim and bronze body, this assembly is rated for saturated steam up to 35 psig and water temperatures up to 281°F, depending on the specific packing used.

Can the control signal be changed on-site?
Yes, the actuator features internal jumpers or switches that allow a technician to select between proportional or floating control signals during commissioning.

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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.