Overview
The Johnson Controls V46AB-25C is a commercial-grade, direct-acting, pressure-actuated water-regulating valve designed to automatically modulate the flow of water or glycol solutions in response to pressure changes. This self-contained, non-electric valve is primarily utilized to regulate refrigerant head pressure in water-cooled condensers, ensuring optimal temperature control while preventing overheating and excessive water consumption.
Features
- Direct-acting operation where the valve opens on a pressure increase to modulate flow smoothly.
- Robust construction with no close-fitting or sliding parts in water passages, minimizing chatter, water hammer, and performance issues in less-than-ideal water conditions.
- Corrosion-resistant brass body and wetted components that promote a longer operating life.
- Take-apart design allows the interior of the valve to be serviced or disassembled without detaching it from the inline pipe connection or pumping down the system.
- Accessible range spring allows for easy manual flushing or adjustments directly on-site.
- Pressure-balanced configuration ensures the valve maintains a consistent setpoint against sudden or gradual water pressure fluctuations.
Specifications
- Manufacturer: Johnson Controls
- Part Number: V46AB-25C
- Valve Size: 1/2 inch
- Body Style: Two-way configuration
- Connection Type: Threaded NPT (Inlet and Outlet)
- Pressure Connection: 1/4 inch Male Flare Fitting (Style 5)
- Opening Point Range: 70 to 260 psi
- Maximum Temperature: 170°F (77°C)
- Media Compatibility: Water, glycol solutions, and standard non-corrosive refrigerants
Applications
- Regulating water or glycol flow to water-cooled condensers in commercial refrigeration and HVAC systems.
- Optimizing head pressure and temperature regulation in ice machines and commercial ice cream machines.
- Managing environmental controls in computer room air conditioning units and data center cooling configurations.
- Maintaining stable cooling profiles in commercial refrigeration display cases and heat pump applications.


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