Johnson Controls V47AT-2 Valve

The Johnson Controls V47AT-2 is a heavy-duty, 2.5-inch temperature actuated water regulating valve engineered for precision flow control in commercial and industrial scale heating applications. This direct acting valve features a cast iron body and a robust ASME flange connection, designed to handle high-capacity water or glycol systems where maintaining a stable operating temperature is critical. With a heating point range of 160 to 205 degrees Fahrenheit, it effectively modulates flow to manage thermal loads in heat exchangers, large compressors, and hydraulic systems. Designed for long-term reliability in the field, the V47AT-2 utilizes a Style 4 temperature sensing element with a 10-inch long, 11/16-inch diameter bulb and a 6-foot armored capillary. The internal pressure-balanced design employs synthetic rubber diaphragms to isolate the range spring from the process media, preventing sedimentation and corrosion. This architecture ensures smooth modulating water valve performance and protects against hydraulic shock and water hammer. Note that the Johnson Controls V47AT-2 is technically identical to the V47AT-2C and serves as a direct replacement.

• Optimized Heating Control: Precision modulation within a 160°F to 205°F range for high-temperature fluid loops.
• Industrial Build Quality: Durable cast iron construction with 2-1/2" ASME flanged connections for secure, leak-proof integration.
• Contamination Resistance: No close-fitting sliding parts in the water passages, reducing the risk of valve sticking due to debris.
• Ease of Maintenance: Features manual flushing capability and a field-replaceable sensing element for minimized downtime.

Common Questions

How do I adjust the opening point on a V47AT-2 valve? To lower the opening temperature, turn the range adjusting screw clockwise. To raise the setpoint, turn it counter-clockwise. Note that the closing point is fixed at approximately 5°F below the opening point. Is this valve compatible with fluids other than water? Yes, the V47 series modulating valve is suitable for use with water and glycol solutions. Use with other non-corrosive liquids should be confirmed based on seal compatibility. What is the maximum bulb temperature for the V47AT-2? The sensing bulb should never be subjected to temperatures more than 20°F above the maximum range setting. For this model, the maximum bulb temperature is 225°F.

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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.