Johnson Controls VG7243ST Valve

The Johnson Controls VG7243ST is a heavy-duty, 2-way normally open globe valve designed for high-capacity flow regulation in commercial HVACR systems. Built with a cast bronze body and 2-inch NPT threaded connections, this valve is engineered for durability in demanding hot water, chilled water, and 38 psig saturated steam applications. The stainless steel trim provides superior resistance to corrosion and scaling, significantly extending the service life of the valve plug and seat compared to standard brass alternatives. With a 46.2 Cv flow coefficient and an equal percentage flow characteristic, it ensures precise, stable throttling and linear heat transfer across various load conditions. The push-down-to-close action is compatible with VG7000 Series standard threaded stem actuators, making it a reliable choice for contractors performing field replacements or new installations requiring robust proportional control.

• Enhanced Durability: The stainless steel trim and cast bronze body withstand aggressive media and high-velocity transitions.
• Precise Modulation: The equal percentage flow design provides consistent control, preventing "hunting" and thermal cycling in large hydronic loops.
• High Flow Capacity: A 46.2 Cv rating allows for significant BTU transfer, ideal for 2-inch pipe size main headers and large air handlers.
• Broad Media Compatibility: Rated for water, glycol solutions up to 50%, and low-pressure steam, offering versatile application across HVAC control systems.
• Reliable Fail-Safe: The normally open configuration ensures the valve returns to the full-flow position upon loss of actuator signal or power, preventing freeze-ups.

What is the maximum fluid temperature for the VG7243ST?
This valve is designed to handle fluid temperatures ranging from 35°F to 281°F (up to 338°F with specific high-temperature packing), making it suitable for both chilled water and saturated steam up to 38 psig.

Can I use this valve with a pneumatic actuator?
Yes, the VG7243ST features a standard threaded stem that is compatible with both Johnson Controls VA-series electric actuators and MP8000 series pneumatic actuators, provided the stroke length matches the valve’s requirements.

Is this valve suitable for mixing or diverting applications?
No, this is a 2-way globe valve designed specifically for two-port throttling. For mixing or diverting, a 3-way VG7000 series valve would be required.

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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.