Johnson Controls V46BD-2 Regulating Valve

The Johnson Controls V46BD-2 is a heavy-duty, direct-acting water regulating valve engineered specifically for maritime and corrosive environments. Designed to modulate water flow to lead-side condensers, this 1 inch NPT water regulating valve responds directly to refrigerant pressure increases to maintain stable head pressure. Built with a maritime type cast naval bronze body and Monel interior parts, the V46BD-2 is resistant to the aggressive galvanic corrosion typically found in seawater cooling applications. Featuring an opening point range of 70 to 260 PSI, this valve is an "all-range" solution compatible with most non-corrosive refrigerants. The unit includes a 30-inch capillary with a Style 34 sweat connection pressure element, ensuring a reliable signal from the high-side tap. Contractors value the V46BD-2's take-apart construction, which allows for internal servicing or diaphragm replacement without pumping down the system or breaking pipe connections, minimizing downtime during critical marine HVACR repairs.

• Corrosion Resistance: Naval bronze construction and Monel trim prevent salt-water pitting and mineral buildup in harsh maritime environments.
• Pressure-Balanced Design: Provides consistent modulation regardless of fluctuating inlet water pressures, preventing short-cycling and hunting.
• Field Serviceable: The "take-apart" design enables quick access to the valve seat and diaphragm for maintenance without removing the valve body from the line.
• Non-Restrictive Flow: Minimal sliding parts in the water passage reduce the risk of clogging from silt or debris common in open-loop cooling.
• Wide Setpoint Range: The 70 to 260 PSI adjustment range accommodates a broad spectrum of refrigerant types and condensing temperatures.

How do I adjust the opening point on the V46BD-2?
Use the range adjusting screw located at the top of the spring housing. Turning the screw counter-clockwise raises the opening point, while a clockwise turn lowers it. Always adjust in small increments while monitoring the high-side manifold gauge.

Can this valve be used for bypass or heat pump service?
No, the V46BD-2 is a direct-acting valve that opens on pressure rise, making it suitable for condenser cooling. For bypass or heat pump applications requiring the valve to open on pressure decrease, a reverse-acting V46N series valve should be used.

What is the maximum water temperature rating for this maritime valve?
The V46BD-2 is rated for a maximum water temperature of 170°F (77°C), making it ideal for standard vessel refrigeration and process cooling loops.

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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.