Emerson Alco 047514 Solenoid Valve

The Emerson Alco 047514 Solenoid Valve (model 200RB4S4M) is a heavy-duty, pilot operated refrigeration solenoid valve designed for high-performance liquid, suction, or discharge gas service. Built for contractors who need reliable flow control, this 2-way normally closed valve features a 1/2" ODF sweat inlet and a 5/8" ODM sweat outlet, providing a robust solution for medium-capacity systems. With a nominal R22 capacity of 8.0 tons and an R134a capacity of 6.0 tons, this valve body is engineered to handle a maximum working pressure of 500 PSIG and a maximum operating pressure differential (MOPD) of 300 PSIG.

The 200RB series solenoid valve utilizes a pilot-operated piston design that requires a minimum pressure drop of 2 PSI for full opening, ensuring crisp actuation in demanding HVACR environments. This specific configuration includes a manual opening stem, allowing technicians to manually override the valve during system evacuation or troubleshooting. The extended copper ends facilitate brazing without disassembly, protecting the internal PTFE O-ring and ensuring a superior external seal. Compatible with HCFC and HFC refrigerants including R-22, R-134a, R-404A, and R-507, it represents the industry standard for refrigerant flow control and durability.

• Versatile Application: Ideal for use in liquid lines, suction lines, or hot gas discharge service across commercial refrigeration and AC systems.
• Serviceability: The manual stem provides immediate control during power failures or maintenance, while the take-apart design allows for internal component replacement.
• Simplified Installation: Extended sweat connections allow for direct brazing into the line, saving time and reducing the risk of overheating internal seals.
• Standardized Coils: Uses the Emerson "standard" coil family, allowing for easy updates or voltage changes without replacing the entire valve body.
• High Fluid Temperature Rating: Capable of handling fluid temperatures up to 250°F, making it suitable for high-heat discharge gas applications.

• Does this valve include the solenoid coil? No, this is a "valve less coil" (VLC) body. You must pair it with a compatible Emerson coil (such as the ASC2 or AMG series) in the required voltage for your specific application.
• Can this be used for bi-directional flow? Standard 200RB valves are uni-directional. However, this series can be converted to bi-flow operation for heat pump applications using a KS30293 kit, though the manual stem configuration is typically used in dedicated liquid or suction lines.
• What is the purpose of the manual stem? The manual stem (M-suffix) is a critical tool for contractors, allowing you to manually open the valve to recover refrigerant or pull a vacuum without energizing the system.

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.