Emerson Alco 056766 Solenoid Valve

The Emerson Alco 056766 is a professional-grade 200RB6T5 solenoid valve engineered for precision refrigerant control in liquid, suction, and discharge gas applications. This pilot-operated refrigeration valve features a normally closed configuration and 5/8" ODF (Sweat) extended ends, allowing for efficient brazing without the risk of internal component damage. As the direct replacement for 066170, it maintains seamless backward compatibility for existing system retrofits and repairs.

Built for high-pressure durability, the 200RB series solenoid supports a Maximum Working Pressure (MWP) of 500 psig and a Maximum Operating Pressure Differential (MOPD) of 300 psig. It is compatible with a wide range of refrigerants, providing an R22 capacity of 9.5 tons and R134a capacity of 7.2 tons at standard rating conditions. The valve utilizes a PTFE O-ring for superior external sealing and is designed to work with the Emerson ASC2 coil or equivalent AM and DM series coil assemblies (sold separately).

• Extended Solder Ends: Facilitates easy installation and secure copper-to-copper joints without needing to disassemble the valve body.
• Multi-Refrigerant Compatibility: Reliable performance across A1 and A2L refrigerants including R-22, R-134a, R-404A, and R-507.
• Field Serviceable: The 200RB chassis allows for straightforward internal part replacement, minimizing total system downtime.
• Standardized Coil Family: One coil size fits the entire 200RB line, reducing the necessary truck stock for emergency calls.
• Low Pressure Drop: Designed with a 3/8" port to ensure optimal flow rates with a minimum operating pressure drop of only 2 psi.

Is the coil included with the 056766 valve body?
No, this is a "Valve Less Coil" (VLC) model. You must pair it with a compatible Emerson ASC2, AM, or DM series coil based on your specific voltage requirements (e.g., 24V, 120V, or 240V).

Can this valve be used for bi-flow heat pump applications?
The standard 200RB6T5 is a uni-directional valve. For bi-directional flow in heat pump liquid lines, a KS30293 conversion kit is required to modify the internal checks.

What is the maximum fluid temperature rating?
The valve is rated for a maximum fluid temperature of 250°F, making it suitable for hot gas discharge service.

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.