Johnson Controls V47AD-19 Regulating Valve

The Johnson Controls V47AD-19 is a heavy-duty 1" NPT water regulating valve engineered for precision temperature control in high-demand HVACR applications. Built with a rugged cast iron body, this direct-acting temperature actuated valve modulates water flow to maintain setpoints in condensers and heat exchangers. It features a cross ambient point range of 40 to 85 degrees F, ensuring stable performance across varying environmental conditions. The assembly includes a Style 4 sensing element with an 11/16" diameter by 16-1/4" long bulb, connected via a 6' capillary for flexible remote mounting. With its 1/2" NPT external fitting, the V47AD-19 provides a secure, leak-resistant connection suitable for industrial cooling loops. Contractors should note that the V47AD-19 and V47AD-19C models are technically identical, sharing the same hydraulics and response curves. This valve is indispensable for technicians managing refrigeration head pressure control or fluid temperature regulation where reliability and mechanical simplicity are prioritized.

• Corrosion-Resistant Housing: The cast iron construction provides a high pressure rating and durability in mechanical rooms.
• Precise Modulation: Direct-acting design responds immediately to temperature fluctuations at the bulb, optimizing water-cooled condenser efficiency.
• Cross Ambient Operation: Maintains accurate control even when the ambient temperature around the valve body exceeds the bulb temperature.
• Standardized Threading: Features a 1" NPT inlet and outlet for seamless integration into existing commercial piping systems.

Common Questions

Can the V47AD-19 be used for heating applications?
This specific model is designed as a direct-acting valve, meaning it opens on a temperature rise, which is typical for cooling applications. For heating-specific requirements, a reverse-acting valve would generally be specified.

What is the maximum water pressure for this Johnson Controls water valve?
Most units in the V47 series are rated for a maximum supply water pressure of 150 psi, though you should verify your specific system pressure does not exceed the mechanical limits of the cast iron body.

Is the capillary length adjustable?
The 6' capillary is fixed. It must be handled with care to avoid kinks or sharp bends that could compromise the fluid charge within the Style 4 sensing bulb.

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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.