Johnson Controls V47AA-3 Actuated Valve

The Johnson Controls V47AA-3 is a heavy-duty, direct-acting temperature actuated water regulating valve engineered for critical cooling and heating applications. This industrial-grade modulating valve features a 3/8" NPT connection and is designed to open on a temperature increase at the sensing bulb. With a cross ambient point range of 75 to 135 degrees F, it provides precise thermal flow control for internal combustion engines, air compressors, and hydraulic oil cooling systems. The cast brass construction ensures structural integrity under high-pressure conditions, while the 6-foot capillary and 11/16" x 6" sensing bulb allow for flexible placement in closed-tank immersion setups. A distinct pressure-balanced design utilizes synthetic rubber diaphragms to isolate the range spring from the process fluid, preventing sedimentation and corrosion. This HVACR temperature regulator also includes a 1/2" NPT external fitting and is built to withstand high hydraulic shock without chatter or water hammer, ensuring smooth modulation across the entire operating spectrum.

• Corrosion-Resistant Internals: Features an isolated range spring that never contacts the cooling water, preventing the calcification common in water modulating valves.
• Shock-Resistant Modulation: Engineered to minimize water hammer and withstand sudden hydraulic surges for stable HVAC system performance.
• Ease of Maintenance: Equipped with a manual flushing mechanism to clear debris and deposits without full system disassembly.
• Precision Sensing: Utilizes a Style 4 immersion bulb for accurate temperature-actuated regulation in both glycol and water systems.
• Durable Construction: High-quality cast brass body provides a long operational life in demanding commercial environments.

• Is the Johnson Controls V47AA-3 suitable for potable water? No, this unit is manufactured from copper alloy containing lead and is intended strictly for commercial water regulation in non-potable systems.
• Can I adjust the opening point of this valve? Yes, the opening point is adjustable via the range screw. Turning the screw counterclockwise raises the temperature setpoint.
• What is the maximum bulb temperature for this model? The sensing bulb should never be subjected to more than 155°F, which is 20°F above the maximum range limit.
• Does this valve come with a bypass? Yes, this specific part number typically includes a removable bypass plug that can be swapped for a provided orifice for continuous minimum flow.

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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.