Johnson Controls V46AR-1 Regulating Valve

The Johnson Controls V46AR-1 is a commercial-grade, direct-acting water regulating valve engineered specifically for high-capacity refrigeration systems utilizing non-corrosive refrigerants. Featuring a heavy-duty cast iron body and a 1-1/2" ASME four-hole flange connection, this valve is designed to modulate water flow to a water-cooled condenser in response to changes in refrigerant head pressure. With an opening point range of 70 to 260 PSI, the V46AR-1 provides precise head pressure control, ensuring stable system performance even under fluctuating load conditions. The unit is equipped with a Style 45 pressure element, which includes a 30-inch capillary and a 1/4" flare nut for secure sensing line integration.

Built for the rigors of mechanical rooms, this pressure-actuated valve utilizes a pressure-balanced design that prevents water pressure variations from affecting the refrigerant setpoint. The internal construction is designed with no close-fitting or sliding parts in the water passages, significantly reducing the risk of water hammer or clogging from sediment. For maintenance, the take-apart construction allows technicians to access internal components or perform manual flushing to clear debris without removing the valve body from the piping, minimizing downtime during service calls.

Key Benefits

• Broad Refrigerant Compatibility: Optimized for systems using R-22, R-134a, R-404A, and other standard non-corrosive refrigerants.
• Robust Flow Control: The standard flow configuration supports large-scale water-cooled condensers, ice machines, and commercial chiller applications.
• Serviceable Design: Features an accessible range spring and replaceable power elements to simplify field repairs and calibration.
• Internal Durability: Equipped with a Buna-N valve disc and nylon-reinforced diaphragm for reliable sealing and long-term cycling.
• High Temperature Rating: Capable of handling water supply temperatures up to 170°F (77°C).

Common Questions

How do I adjust the opening point on the V46AR-1?
Technicians can adjust the setpoint by turning the range adjustment screw located at the top of the valve. Turning the screw clockwise will lower the opening point pressure, while counter-clockwise adjustments increase the pressure required to open the valve.

Can this valve be used in sea water or corrosive environments?
The V46AR-1 is constructed with a cast iron body and is intended for use with fresh water and non-corrosive refrigerants. For maritime or salt water applications, a bronze-body maritime model with Monel trim is required.

What is the maximum water pressure for this unit?
This valve is rated for a maximum water supply pressure of 150 psig. It is essential to ensure that the differential pressure across the valve does not exceed 60 psi to maintain proper modulation and prevent seat damage.

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.