Johnson Controls VG7441ST+72CHGA Valve Assembly

The Johnson Controls VG7441ST+72CHGA is a heavy-duty 2-way normally closed globe valve assembly designed for precise flow control in demanding HVAC applications. This 2-inch NPT valve features a robust cast bronze body with brass trim and a 46.2 Cv rating, utilizing an equal percentage flow characteristic to maintain stable modulation across varying load conditions. It comes equipped with a spring-return actuator that operates on 24Vac, ensuring the valve returns to its fail-safe closed position during power loss. As a field-selectable unit, it supports 0(2)-10Vdc, 0(4)-20mA, two-position, or floating control signals, providing maximum flexibility for building automation systems. This assembly serves as the direct VG7241ST+946AGA replacement, allowing for seamless retrofitting without piping modifications. Engineered for high-pressure installations, the VG7000 series bronze valve offers reliable shutoff and long-term durability in chilled or hot water systems.

Key Benefits

• Field-Selectable Control: Simplifies inventory by supporting 0-10Vdc modulating, floating, and on/off signals in a single unit.
• Direct Retrofit Compatibility: Engineered as a drop-in replacement for the legacy VG7241ST+946AGA model.
• Fail-Safe Operation: Integrated spring return ensures the 2-way normally closed configuration protects equipment during power failures.
• High Flow Precision: The equal percentage plug design provides superior throttling for accurate temperature management.

Common Questions

Is this valve compatible with existing pneumatic controllers?
This specific assembly is electronic, utilizing the Johnson Controls 72CHGA actuator for 24Vac systems. While it integrates with DDC systems via 0-10V or 4-20mA signals, it is not a direct pneumatic replacement without a transducer.

Can I change the fail-safe position in the field?
The mechanical fail-safe is determined by the valve body and actuator mounting. This assembly is factory-configured as normally closed (Stem Up to Close or Stem Down to Close depending on the linkage) to ensure safety upon power loss.

What media is compatible with the cast bronze body?
The VG7441ST is designed for water and glycol solutions up to 50%. It is rated for use in both chilled water and hot water loops within standard HVAC temperature ranges.

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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.