Johnson Controls VG2431VM Valve

The Johnson Controls VG2431VM is a heavy-duty, 4-inch flanged globe valve designed for precision control in high-capacity chilled or hot water systems. This 2-way normally closed valve features a robust cast iron body compliant with ANSI Class 125 flat-faced flange standards. Utilizing a modified linear flow characteristic, it ensures stable modulation with a high flow coefficient of 150 Cv. The internal assembly consists of a durable brass trim and a 3/8-inch threaded stem configured for push-down-to-open action. Engineered for seamless HVAC automation, this commercial mixing valve is frequently paired with pneumatic or electric actuators to maintain strict setpoints in large-scale air handling units and mechanical rooms. Its flange-to-flange dimensions facilitate straightforward replacement in existing pipe schedules where reliable hydronic control is critical for system efficiency.

Key Benefits

• Optimized Flow Control: The 150 Cv rating and modified linear flow prevent hunting in the control loop, ensuring consistent heat transfer.
• Industrial-Grade Construction: The ANSI Class 125 cast iron body provides the structural integrity required for high-pressure commercial piping.
• Field Serviceable: The 3/8-inch threaded stem and push-down-to-open design simplify actuator mounting and field adjustments.
• Reliable Sealing: High-quality brass trim ensures tight shut-off and long-term resistance to scale buildup in open or closed loops.

Common Questions

What actuators are compatible with the VG2431VM?
This valve is designed to work with Johnson Controls MP8000 series pneumatic actuators or VA series electric actuators that support a 3/8-inch threaded stem and provide sufficient force for a 4-inch globe valve.

Can this valve be used for steam applications?
The VG2431VM with brass trim is primarily rated for water and glycol solutions. For high-pressure steam, a stainless steel trim configuration is typically recommended to prevent wire-drawing.

How do I ensure a leak-free installation on the flanges?
Ensure you use full-face gaskets compatible with ANSI Class 125 flat-faced flanges and follow a cross-pattern torquing sequence to prevent stress fractures in the cast iron body.

This item must ship via truck. Please contact us for freight quote.

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.