Johnson Controls VG1245AD Ball Valve

The Johnson Controls VG1245AD is a high-performance 1/2 inch NPT ball valve engineered for precise modulation in HVAC applications. This two-way control valve features a 1.2 Cv flow coefficient and utilizes an equal percentage flow characteristic, ensuring stable control loop performance even at low load conditions. Constructed with a forged brass body and 321 stainless steel trim, the VG1245AD is designed to withstand the rigors of chilled or hot water systems with up to 50% glycol solutions. As the direct replacement for VG1243AD, it maintains a compact footprint for easy retrofitting into existing hydronic piping systems. This valve is rated for a fluid temperature range of 23?F to 203?F and a maximum static pressure of 580 psig. It integrates seamlessly with VA9104 or VA9300 series actuators using a standard M9000-520 linkage, providing reliable automated flow control for commercial air handling units and fan coils.

Key Benefits for Contractors:

• Corrosion Resistance: The stainless steel ball and stem prevent premature seat wear and scale buildup in demanding hydronic loops.
• Precise Throttling: An integrated Amodel flow characterization disk provides a true equal percentage curve for superior part-load efficiency.
• Simplified Inventory: Serves as the official VG1243AD replacement, ensuring backward compatibility with legacy field installations.
• Leak Protection: Double O-ring stem seals and a reinforced TFM 1600 seat provide bubble-tight shutoff to prevent energy waste.
• Flexible Installation: The non-clogging design and high close-off pressure rating make it ideal for high-rise zone control.

Common Questions:

Does the VG1245AD require a specific mounting orientation?
This valve can be mounted in any orientation except with the actuator below the horizontal axis of the pipe to prevent moisture from damaging the drive motor.

What is the difference between the VG1245AD and the discontinued VG1243AD?
The VG1245AD is the current technical successor, offering improved internal trim materials while maintaining the same 1.2 Cv rating and 1/2" NPT connection points for a drop-in fit.

Can this valve handle high-pressure steam applications?
No, the VG1245AD is rated for water and glycol solutions. For steam service, a valve with specific high-temperature packing and specialized seat materials is required.

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.