The Johnson Controls V46AA-43 is a 3/8" NPT pressure-actuated water-regulating valve specifically engineered for commercial refrigeration and HVAC systems. As a direct-acting modulating valve, it opens on a pressure increase, making it the standard choice for regulating head pressure in water-cooled condensers. Designed to handle non-corrosive refrigerants, this valve maintains a stable refrigerant head pressure by modulating the flow of water or glycol through the system. This model features a wide adjustment range of 70 to 260 psi, allowing technicians to fine-tune system performance based on specific high-side requirements. The V46AA-43 utilizes a pressure-balanced design and high-refrigerant-pressure resistant bellows that withstand up to 28 bar, ensuring the setpoint remains independent of water inlet pressure fluctuations. With its 48-inch capillary and .040-inch ID, installation is straightforward for inline piping configurations, providing a reliable, non-electric solution for preventing excessive water consumption and ensuring efficient thermal regulation. Key Benefits: Robust Pressure Modulation: The modulating water valve provides smooth, continuous adjustment of water flow to maintain precise refrigerant head pressure. High Hydraulic Shock Resistance: Built to minimize water hammer and chatter, the internal design is capable of withstanding significant hydraulic surges without damage. Superior Corrosion Resistance: All internal parts in contact with media are constructed from corrosion-resistant materials, extending the service life of the commercial regulating valve. Serviceable Design: Featuring take-apart construction, the Johnson Controls water valve allows for internal access and manual flushing without the need to pump down the refrigeration system. Pressure-Balanced Performance: The diaphragm-operated mechanism ensures consistent operation regardless of sudden changes in supply water pressure. Common Questions: What is the primary application for the V46AA-43? This 2-way pressure-actuated valve is primarily used to control the flow of cooling water to a condenser by sensing changes in the refrigerant circuit, typical in water-cooled HVACR equipment. Can this valve be used with glycol solutions? Yes, the Johnson Controls V46 series is compatible with both water and various glycol solutions commonly found in secondary cooling loops. Does this model require an external power source? No, the V46AA-43 is a self-contained, non-electric component that operates solely based on the pressure exerted by the refrigerant via the capillary tube. 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.
