Johnson Controls V46AT-1 Regulating Valve

Manage head pressure with precision using the Johnson Controls V46AT-1, an industry-standard water regulating valve engineered for commercial refrigeration systems. This direct acting pressure actuated valve is specifically designed for water cooled condensers using non-corrosive refrigerants. Featuring a 2 1/2" ASME four hole flange and a cast iron body, the V46AT-1 provides reliable modulation of water or glycol flow to maintain optimal head pressure. The unit operates within a 70 to 170 PSI opening point range, utilizing a Style 5 pressure element with a 1/4" external flare fitting for secure refrigerant connection. Built for durability in high-demand environments, its pressure-balanced design ensures consistent setpoints regardless of varying water pressure, effectively preventing chatter and water hammer during operation.

Key Benefits

• Robust Cast Iron Construction: Built with a durable cast iron body and corrosion-resistant internal parts for extended service in commercial applications.
• Precise Pressure Modulation: The pressure actuated mechanism provides smooth, continuous throttling to ensure stable refrigerant head pressure.
• Ease of Maintenance: Features take-apart construction, allowing technicians to access the interior and replace diaphragms or sensing elements without removing the valve from the piping or pumping down the system.
• Optimized Flow Control: Designed as a direct acting valve that opens on pressure increase, ensuring maximum cooling efficiency during high-load periods.
• Manual Flushing Capability: Includes an accessible range spring that allows for easy manual flushing to clear sediment and debris without affecting the pressure adjustment.

Common Questions

Adjustment is performed by turning the 1/2" square head range screw at the top of the valve. Use a standard service wrench to turn the screw counterclockwise to raise the opening point or clockwise to lower it. For precise calibration, always monitor the refrigerant high-side pressure while making adjustments under normal load.

Yes, the V46AT-1 is suitable for modulating the flow of both water and glycol solutions in closed or open loops, making it versatile for computer room units and large-scale commercial chillers.

This commercial type valve is rated for a maximum water temperature of 170°F (77°C), suitable for most standard water-cooled condensing applications.

This item is not eligible for free shipping.

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.