Johnson Controls V47AE-1 Regulating Valve

The Johnson Controls V47AE-1 is a heavy-duty, commercial-grade temperature actuated water regulating valve designed for precision flow control in cross-ambient service. Built with a rugged cast iron body and featuring a 1-1/4" NPT threaded connection, this direct acting valve modulates the flow of water or glycol to maintain consistent operating temperatures in heat exchangers, air compressors, and hydraulic systems. This model is engineered with a 75 to 135 degrees F setpoint range, making it ideal for applications where the sensed temperature may fluctuate above and below the ambient temperature. The V47AE-1 utilizes a Style 4 sensing element with an 11/16" diameter by 16-1/4" long bulb and a 6-foot capillary for flexible remote sensing. The internal design eliminates close-fitting sliding parts in the water passages, significantly reducing the risk of fouling from sediment or mineral buildup. Additionally, the range spring is isolated from the cooling medium to prevent corrosion, while the overall valve architecture is optimized to minimize water hammer and chatter during high-demand modulation.

• Enhanced Durability: Cast iron construction and spring isolation ensure long-term performance in demanding industrial environments.
• Foul-Resistant Design: Absence of sliding parts in water passages prevents sticking and maintains consistent HVAC water regulation.
• Cross-Ambient Versatility: Specifically designed to maintain control even when process temperatures cross the ambient threshold.
• Serviceability: Includes a 1/2" NPT external fitting and allows for easy manual flushing to clear line debris without disassembly.

Common Questions

How do I prevent oscillation or chatter in the V47AE-1?
Ensure the valve is mounted vertically with the bellows facing downward. Proper sizing is also critical; a valve that is too large for the flow requirements will frequently hunt and cause chatter.

What is the maximum bulb temperature for the V47AE-1?
To prevent damage to the sensing element, the bulb should never be subjected to temperatures exceeding 155°F, which is 20°F above the maximum range limit.

Can this valve be used for heating applications?
This is a direct acting valve, meaning it opens on a temperature increase. It is primarily used for cooling applications to bypass or regulate water flow to maintain a specific temperature setpoint.

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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.