Emerson Alco 063312 Solenoid Valve

The Emerson Alco 063312 Solenoid Valve (model 500RB5F4) is a heavy-duty, pilot operated refrigeration solenoid valve engineered for liquid, suction, or hot gas service. This 2-way normally open solenoid valve features a 1/2" flare connection and is designed for high-capacity performance in commercial refrigeration and air conditioning systems. With an R22 cooling capacity of 8.2 tons and an R134a capacity of 7.8 tons, this valve ensures precise refrigerant flow control under demanding thermal loads. It serves as the direct replacement for R35E124, allowing for seamless retrofits without extensive piping modifications. The normally open configuration ensures the valve remains in the open position when de-energized, making it a critical component for specific system architectures requiring fail-safe refrigerant bypass or continuous flow. Built for durability, the 500RB series minimizes pressure drop while maintaining a tight seal against backflow and internal leakage.

• Versatile Refrigerant Compatibility: Optimized for R22, R134a, R404A, and R507 applications.
• High Flow Capacity: Pilot-operated diaphragm design supports high tonnage requirements for large-scale evaporators.
• Direct Drop-in Replacement: Specifically replaces legacy R35E124 units for simplified field service.
• Secure Flare Connections: 1/2" flare fittings provide a reliable, leak-resistant mechanical seal.
• Normally Open Logic: Ideal for systems requiring a fail-open state to prevent high-side pressure buildup during power loss.

What is the maximum operating pressure differential for the 500RB5F4?
The 500RB series typically handles a high MOPD, but ensure your coil matches the required voltage to provide enough lift for the pilot assembly against system head pressure.

Can I install this valve in any orientation?
For optimal performance and to prevent debris accumulation in the pilot port, it is highly recommended to install the valve with the coil in the upright vertical position.

Does this valve include the solenoid coil?
This is the valve body only. You must select the appropriate AMG or ASC2 series coil based on your specific control voltage (e.g., 24V, 120V, or 240V).

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.