Johnson Controls V47AE-3 Valve

The Johnson Controls V47AE-3 is a rugged, 1-1/4 inch NPT cast iron direct acting temperature actuated water regulating valve engineered for precision fluid control in industrial heating applications. Designed with a heating point range of 160°F to 230°F, this valve modulates water flow through a heat exchanger to maintain consistent exit temperatures, preventing system overheating or thermal cycling. The assembly features a high-grade Style 4 bulb measuring 11/16" in diameter and 6" in length, connected by a 6-foot capillary for remote sensing versatility. A 1/2" NPT external fitting ensures a secure, leak-proof interface with standard piping. Contractors frequently specify the V47 series for its field-proven durability in high-demand environments. This HVAC temperature control valve is essential for hydronic systems requiring a temperature actuated water valve that responds reliably to thermal fluctuations without external power sources, streamlining site installation and long-term maintenance cycles.

Key Benefits

• Durable Cast Iron Construction: Provides superior structural integrity and pressure resistance for heavy-duty commercial hydronic applications.
• Direct Acting Modulation: The direct acting valve mechanism ensures immediate response to temperature changes at the sensing bulb.
• Optimized Thermal Sensing: The 11/16" x 6" bulb provides significant surface area for accurate medium sensing within the 160-230°F range.
• NPT Compatibility: Standard 1-1/4" NPT inlet and outlet connections allow for seamless integration into existing pipe schedules.
• Self-Contained Operation: Eliminates the need for electronic actuators or external power, reducing potential failure points in the thermal loop.

Common Questions

How do I adjust the setpoint on the V47AE-3?
The heating point is field-adjustable within the 160 to 230 degrees Fahrenheit range by turning the adjustment screw to increase or decrease spring tension against the bellows.

Can the 6-foot capillary be shortened if it is too long for my application?
No, the capillary and bulb are a factory-sealed thermal system. Kinking or cutting the capillary will result in a total loss of the refrigerant charge, rendering the valve inoperable.

What is the purpose of the Style 4 bulb and 1/2" NPT fitting?
The Style 4 bulb is designed for immersion in the controlled medium. The 1/2" NPT external fitting allows the bulb to be secured into a tank or pipe via a well or packing nut for a pressure-tight seal.

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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.