Johnson Controls VG1845AG Valve

The 1/2" Johnson Controls VG1845AG is a high-performance 3-way ball valve engineered for precise control of hot water, chilled water, and 50% glycol solutions in commercial HVACR systems. Built with a forged brass body and 300-series stainless steel trim, this valve is rated for low-pressure steam up to 15 psig, making it a versatile choice for mechanical contractors. It features an integrated Amodel flow characterizing disk that ensures a true equal percentage flow characteristic, delivering linear temperature control and high rangeability that exceeds traditional globe valves.

Designed for longevity in demanding environments, the VG1845AG utilizes dual EPDM stem seals and 15% graphite-reinforced PTFE seats, which have been tested to remain leak-free for over 200,000 cycles even in iron-oxide contaminated water. With a 4.7 Cv rating and FNPT threaded connections, this valve provides a 200 psi close-off pressure for reliable shutoff. It is fully compatible with Johnson Controls VA9104, M9100 series non-spring return, and VA9203/VA9208 series spring return actuators for flexible field or factory mounting.

Key Benefits

• Superior Durability: The stainless steel trim and blowout-proof stem survive high-temperature water and corrosive conditions better than standard brass options.
• Precision Modulation: Optimized equal percentage flow via the characterizing disk allows for stable hunting-free control in fan coils and air handlers.
• Reduced Maintenance: The self-cleaning ball design and graphite-reinforced seats minimize torque buildup and prevent debris accumulation during operation.
• High Close-Off: Rated for up to 200 psid close-off pressure, ensuring tight sealing and energy efficiency across the 3-way mixing or diverting ports.

Common Questions

• Can this valve be used for steam applications? Yes, because the VG1845AG features stainless steel trim, it is rated for saturated steam up to 15 psig, unlike chrome-plated brass models.
• What is the maximum fluid temperature rating? This valve can handle media temperatures ranging from -22°F to 284°F (-30°C to 140°C) when paired with the appropriate actuator and thermal barrier.
• Is the flow direction critical? Yes, for proper modulation, Port A must be used as the inlet on models with a flow-characterizing disk to maintain the equal percentage curve.

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.