Johnson Controls V47AR-1 Valve

The Johnson Controls V47AR-1 Valve is a heavy-duty, direct-acting temperature actuated water regulating valve designed for modulating flow to maintain precise temperature setpoints in demanding HVACR systems. Built with a rugged cast iron body and featuring a 1 1/2" ASME Flange, this valve is engineered for high-flow capacity in industrial heat exchangers, internal combustion engines, and large-scale condenser applications. The V47AR-1 operates on a cross ambient point range of 75 to 135 degrees F, ensuring reliable performance even when the sensing bulb temperature fluctuates above or below the valve body temperature.

This temperature actuated modulating valve utilizes a Style 4 sensing bulb (11/16" diameter x 16 1/4" length) connected via a 6' capillary for versatile remote sensing. The pressure-balanced design incorporates synthetic rubber diaphragms that protect internal components from sedimentation and eliminate the impact of water pressure variations on setpoint accuracy. With a 1/2" NPT external fitting and a design that minimizes chatter and water hammer, the V47AR-1 (identical to the V47AR-1C) provides consistent, linear modulation for professional-grade thermal management.

Key Benefits

• Industrial Durability: Cast iron construction with corrosion-resistant internal metal parts ensures longevity in harsh mechanical rooms.
• System Stability: Pressure-balanced architecture prevents setpoint drift caused by sudden water pressure fluctuations.
• Reduced Maintenance: Range springs are isolated from the process fluid, preventing scale buildup and internal corrosion.
• Field Serviceability: Designed for easy manual flushing and in-line repairs using standard service tools.
• Smooth Modulation: Innovative internal geometry eliminates water hammer and provides chatter-free operation across the entire 75-135°F range.

Common Questions

What is the difference between the V47AR-1 and the V47AR-1C?
These two part numbers are identical in technical specification and performance; the 'C' suffix often denotes bulk packaging or specific distribution channels but the mechanical components are the same.

Can this valve be used for sea water applications?
This specific model features a cast iron body intended for standard water or glycol systems. For maritime or sea water use, a bronze body variant from the V47 series is usually required.

How should the sensing bulb be positioned for accurate control?
For optimal response, the Style 4 bulb should be installed with the capillary end higher than the plugged end. If installed horizontally, ensure the "TOP" indicator on the bulb is facing upward.

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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.