Johnson Controls VG7241NT+3008EP Valve Assembly

The Johnson Controls VG7241NT+3008EP is a high-performance 1-inch NPT pneumatic globe valve designed for modulating control of hot water, chilled water, and steam in commercial HVACR systems. This 2-way normally open valve features a rugged cast bronze body and durable brass trim, engineered to handle the rigorous demands of mechanical rooms. With a flow coefficient of 11.6 Cv and an equal percentage flow characteristic, it provides precise throttling for stable temperature regulation and optimal heat transfer efficiency.

Driven by an exposed pneumatic actuator with a 9-13 PSI spring range, this assembly includes a factory-mounted pneumatic positioner to ensure the valve stem accurately follows the control signal, even under varying differential pressures. The spring return fail-safe design ensures the valve defaults to the open position upon loss of pilot air, protecting critical system loops from freezing or stagnant conditions. Built to ANSI Class 250 standards, this actuated valve assembly is a reliable choice for contractors focused on high-cycling applications and long-term serviceability.

Key Benefits:

• Precise Modulation: The equal percentage flow curve allows for fine-tuned control at the lower end of the stroke, ideal for sensitive air handling unit (AHU) coils.
• Enhanced Accuracy: The integrated pneumatic positioner eliminates hysterisis and ensures repeatable valve assembly performance.
• Durability: The cast bronze body and brass trim withstand high fluid temperatures up to 284°F, making it suitable for low-pressure steam up to 38 psig.
• Maintenance Friendly: Designed for easy in-line servicing, reducing downtime for high-traffic facility management.

Common Questions:

What is the close-off pressure for this 1-inch valve?
For the VG7241NT+3008EP, the standard close-off pressure is rated at approximately 42 psig when utilizing the 9-13 psi spring range, though actual limits may vary based on air supply pressure.

Can this valve be used for steam applications?
Yes, this Johnson Controls VG7000 series assembly is specifically rated for saturated steam up to 38 psig, provided the media parameters stay within the technical limits of the brass trim and EPDM packing.

Does the assembly include the positioner?
Yes, the "+3008EP" suffix indicates that this 2-way normally open assembly comes with the V-9502 pneumatic positioner factory-installed.

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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.