Johnson Controls VG2831VN Valve

The Johnson Controls VG2831VN is a heavy-duty 4 inch 3-way mixing globe valve designed for precise flow control in demanding commercial HVAC systems. This cast iron globe valve features an ANSI Class 125 flat-faced flange connection, ensuring a secure and leak-resistant fit within chilled water and hot water systems. With a 157 Cv rating and a modified linear flow characteristic, the VG2831VN provides stable modulation for accurate temperature regulation. The internal components consist of high-quality brass trim and a 1/2 inch threaded stem, offering durable performance against system pressure drops. Engineered for compatibility with Johnson Controls pneumatic and electric actuators, this valve is a standard choice for contractors managing large-scale hydronic mixing applications where reliability and high flow capacity are non-negotiable.

• High Flow Capacity: The 157 Cv rating supports significant volumetric flow for large-scale mechanical systems.
• Durable Construction: Cast iron body and brass trim provide long-term resistance to wear in closed-loop systems.
• Standardized Fitment: ANSI Class 125 flanged ends simplify integration into existing 4-inch piping infrastructure.
• Precise Modulation: Modified linear flow design prevents hunting and ensures stable mixing of supply and return water.

Common Inquiries for the VG2831VN Valve

What actuators are compatible with the Johnson Controls VG2831VN?
This valve is designed to interface with Johnson Controls VA-Series electric actuators and MP8000 series pneumatic actuators using the 1/2 inch threaded stem.

Can this 3-way valve be used for diverting applications?
The VG2831VN is specifically engineered as a mixing valve (two inlets, one outlet). Using it for diverting service can result in premature trim wear and reduced control stability.

What is the maximum fluid temperature for this globe valve?
The VG28 series with brass trim is typically rated for water temperatures ranging from 35°F to 281°F, depending on the specific pressure and glycol concentration of the system.

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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.