Johnson Controls V47AD-3 Valve

The Johnson Controls V47AD-3 is a rugged, direct-acting water regulating valve designed specifically for heating applications requiring precise temperature modulation. Featuring a 1-inch NPT connection and a robust cast iron body, this valve is engineered to regulate the flow of water or glycol to maintain setpoint stability in heat exchangers, industrial engine cooling, and large-scale hydraulic systems. This model covers a heating point range of 160 to 230 degrees F, ensuring reliable performance in high-temperature environments. The Style 4 temperature bulb, measuring 11/16-inch in diameter and 6 inches in length, provides accurate thermal sensing via a 6-foot armored capillary. With a pressure-balanced design, the V47AD-3 remains unaffected by varying inlet pressures, while the 1/2-inch NPT external fitting simplifies integration. Note that the V47AD-3 is identical to the V47AD-3C, offering full compatibility for existing commercial and industrial HVACR installations.

Key Benefits

• Internal Pressure Balance: The Johnson Controls water valve utilizes a balanced diaphragm design to ensure consistent flow regulation regardless of water pressure fluctuations.
• Corrosion Resistance: Built with a cast iron water regulating valve body and no sliding parts in the water passages, the unit minimizes sediment buildup and mechanical sticking.
• Field Adjustability: Operators can easily calibrate the opening point using the top-mounted adjusting screw to meet specific system demands.
• Simplified Service: The modulating water valve is designed for in-line repairs, allowing technicians to replace internal components without removing the entire valve assembly from the piping.

Common Questions

What is the difference between the V47AD-3 and the V47AD-3C?
The V47AD-3 and V47AD-3C are functionally identical; the "C" suffix typically denotes a commercial packaging or updated manufacturing designation without altering the HVAC technical specifications or performance.

How do I adjust the opening point on the V47 series?
To raise the opening point on this direct-acting valve, turn the adjusting screw counterclockwise. Turning it clockwise will lower the opening point. Note that the valve is generally set to open approximately 3 to 5°F above the closing point.

Can this valve be used for sea water applications?
Standard Johnson Controls V47 cast iron models are intended for fresh water or glycol. For sea water or high-corrosion environments, a naval bronze version is typically required to ensure material longevity.

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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.