Johnson Controls VG7441PT+72CHGA Valve Assembly

The Johnson Controls VG7441PT+72CHGA is a heavy-duty 1-1/4 inch NPT 2-way normally closed globe valve assembly designed for precise control of hot water or chilled water in demanding HVAC systems. Engineered with a cast bronze body and brass trim, this valve features an 18.5 Cv equal percentage flow characteristic to ensure stable modulating control across the entire stroke. The unit is paired with a spring return electronic actuator, ensuring a failsafe position upon loss of 24Vac power. This versatile assembly supports field-selectable control signals, including 0(2)-10 VDC, 0(4)-20 mA, floating, or two-position control. It serves as the direct replacement for VG7241PT+946AGA and VG7241PT+946HGA models, making it an essential drop-in solution for maintaining legacy hydronic loops. The high-temperature rated packing and robust linkage assembly provide reliable tight shut-off and performance in modulating valve applications requiring high close-off pressure ratings.

• Field Flexibility: The onboard logic allows for proportional, floating, or on/off control, adapting to various BMS configurations without extra hardware.
• Fail-Safe Reliability: Integrated spring return actuator ensures the valve returns to the normally closed position during power interruptions to prevent system damage.
• Precise Flow Control: Featuring an equal percentage flow plug designed specifically for hydronic heating and cooling systems.
• Direct Retrofit: Engineered as a replacement for VG7241PT series, simplifying field upgrades by utilizing existing piping footprints.
• Durable Construction: The bronze valve body and brass internals offer superior resistance to corrosion and scaling in closed-loop systems.

Common Technical Questions

What is the close-off pressure rating for this 1.25 inch valve?
This globe valve assembly is designed to handle high differential pressures; technicians should verify the specific actuator torque rating against the 18.5 Cv plug to confirm the maximum close-off for their specific head pressure.

Can I use this for steam applications?
While the VG7441PT series utilizes a bronze body, always check the specific packing material and temperature limits; this configuration is primarily optimized for water and glycol solutions in HVAC control systems.

How do I change the control signal from 0-10V to 4-20mA?
The field-selectable actuator features internal DIP switches or jumpers that allow for quick transitions between analog voltage and current signals or floating control.

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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.