Johnson Controls V47AA-2 Valve

The Johnson Controls V47AA-2 Valve is a 3/8" NPT temperature actuated water regulating valve engineered for direct acting flow control in demanding hydronic and cooling applications. Built with a rugged cast brass body, this valve is designed to open specifically on a temperature increase at the bulb. It features a broad heating point range of 160 to 230 degrees F, making it a reliable solution for maintaining precise thermal setpoints. The assembly includes a 6' capillary lead and a Style 4 sensing bulb (11/16" diameter x 3 1/4" length), providing versatile positioning for accurate temperature sensing. For secure installation, the unit utilizes a 1/2" NPT external fitting. As a modulating water valve, the V47AA-2 provides proportional response to thermal fluctuations, ensuring stable system performance and preventing excessive cycling in high-temperature environments.

• Precision Control: The modulating valve design provides smooth water flow regulation to prevent thermal overshoot.
• Direct Acting Operation: Specifically calibrated to open as temperatures rise, ideal for bypass heating or heat exchanger regulation.
• Durable Construction: The cast brass assembly resists corrosion and withstands standard commercial water pressures.
• Flexible Installation: Equipped with a 6-foot capillary and 3/8" NPT water connection for integration into various pipe geometries.
• Thermal Sensitivity: High-quality Style 4 bulb ensures rapid response to temperature changes at the sensing point.

How do I adjust the temperature setpoint on a V47AA-2?
Adjustments are made via the range screw, which alters the spring tension against the bellows to set the specific temperature at which the valve begins to open between 160 and 230 degrees F.

Is the Johnson Controls V47AA-2 suitable for steam applications?
No, this is a temperature actuated water regulating valve specifically designed for liquid flow. Using it with steam will likely damage the internal bellows and seals.

What is the difference between V47A and V47N models?
The V47A is direct acting (opens on temperature rise), whereas the V47N is reverse acting (closes on temperature rise). Always verify the action type required for your specific heat transfer loop.

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.