Johnson Controls VG2831WN Valve Body

The Johnson Controls VG2831WN is a heavy-duty, 5-inch 3-way mixing globe valve engineered specifically for high-capacity flow control in commercial HVACR and industrial applications. This ANSI Class 125 flanged unit is built with a rugged cast iron body and durable brass trim, providing long-term reliability when managing hot water, chilled water, or 50% glycol solutions. With a high flow coefficient (238 Cv) and a modified linear flow characteristic, this valve ensures precise temperature regulation and stable mixing performance. The 1/2-inch threaded stem is compatible with a wide range of pneumatic and electric actuators, including the MP8000 series, making it a versatile choice for large-scale air handling units and central plant hydronic systems. Designed for demanding environments, the VG2000 series globe valve handles fluid temperatures up to 281°F and maximum static pressures of 175 psig, meeting rigorous ASME B16.1 standards for professional-grade installations.

• High Flow Capacity: The 238 Cv rating supports large-scale heating and cooling requirements with minimal pressure drop.
• Precision Mixing: 3-way configuration and modified linear flow allow for exact modulation of fluid temperatures.
• Robust Construction: Cast iron body and brass trim offer superior strength and resistance to scaling in hydronic systems.
• Standardized Integration: ANSI Class 125 flat-faced flanges and a 1/2-inch threaded stem ensure straightforward mechanical installation and actuator mounting.
• Broad Operating Range: Suitable for a wide thermal envelope from 35°F to 281°F, covering most district energy and commercial boiler applications.

What is the maximum close-off pressure for this valve?
Close-off pressure depends on the specific actuator paired with the valve body; typically, pneumatic actuators like the MP86 series provide reliable close-off for 5-inch bodies within standard HVAC pressure ranges.

Can this valve be used for steam applications?
Yes, the Johnson Controls VG2831WN is rated for saturated steam up to 35 psig at 281°F.

What type of maintenance is required for the stem packing?
The valve utilizes EPT (Ethylene Propylene Terpolymer) ring packs. Periodic inspection for leaks is recommended, and standard Johnson Controls packing kits are available for field replacement without removing the valve body from the line.

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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.