Johnson Controls VG7841ET Valve

The Johnson Controls VG7841ET is a commercial-grade 3-way mixing globe valve designed for precise flow control in chilled or hot water systems. Featuring a 1/2 inch NPT connection and a 1.8 Cv rating, this valve utilizes an equal percentage flow characteristic to maintain stable room temperatures and optimize heat exchanger performance. The cast bronze body and brass trim provide the structural integrity required for high-pressure HVAC applications, while the standard threaded stem ensures seamless actuator compatibility with VA-series linkages. This HVAC mixing valve is engineered for a maximum fluid temperature of 281°F, making it a reliable solution for hydronic systems requiring modulating or on/off control. By utilizing a spring-loaded PTFE packing, the VG7841ET minimizes friction and stem leakage, ensuring long-term operational efficiency in demanding mechanical environments.

• Optimized Flow Control: The 1.8 Cv equal percentage configuration prevents hunting in control loops, ensuring stable discharge air temperatures.
• Rugged Construction: Cast bronze body and brass internal trim resist de-zincification and mechanical wear in closed-loop systems.
• Broad Compatibility: Standard threaded stem allows for easy integration with pneumatic or electric actuators.
• High Temperature Rating: Suitable for saturated steam up to 38 psig or hot water applications.

What is the maximum pressure rating for the VG7841ET?
This valve is rated for ANSI Class 250, providing high-pressure performance in various commercial piping configurations.

Can this valve be used for diverting applications?
The VG7841ET is specifically designed as a mixing valve; using it for diverting purposes may cause water hammer and internal component stress.

Is the stem packing field-replaceable?
Yes, the Johnson Controls VG7000 series allows for packing maintenance to extend the service life of the valve body without full removal from the line.

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.