Emerson Alco 047501 Solenoid Valve

The Emerson Alco 100RB2F3 (047501) is a 2-way normally closed solenoid valve designed for performance in liquid, suction, and discharge gas service applications. Featuring a 3/8" flare connection, this direct-acting refrigeration solenoid valve is optimized for precise refrigerant flow control. With an R22 cooling capacity of 1.27 tons and an R134a capacity of 1.2 tons, this valve body is compatible with a wide range of common refrigerants including R-404A, R-407C, and R-507. Built with a stainless steel enclosing tube and a durable synthetic seated design, it resists internal corrosion while maintaining a maximum operating pressure differential (MOPD) of up to 500 PSI. This HVAC solenoid valve replacement requires an AMG or DMF series coil for operation. Its compact profile and refrigerant solenoid valve flare fittings make it an ideal choice for contractors servicing commercial refrigeration units and split systems where space and leak prevention are critical factors.

• Direct-Acting Operation: Eliminates the need for a minimum pressure differential to open the valve, ensuring reliable operation in low-pressure systems.
• Multi-Refrigerant Compatibility: Engineered for use with R22, R134a, R404A, R407C, and R507, providing versatility for various field repairs.
• Rugged Construction: Features a high-grade stainless steel stem and plunger assembly for extended service life in high-cycle applications.
• Extended Pressure Range: Rated for a maximum working pressure of 500 PSI, making it suitable for modern high-pressure systems.

What is the difference between direct-acting and pilot-operated valves?
This 100RB2F3 is a direct-acting valve, meaning the solenoid coil directly lifts the valve pin to allow flow. Unlike pilot-operated valves, it does not require a minimum pressure drop to function, which is critical for liquid line applications with low flow rates.

Does this valve body include the electrical coil?
No, the Emerson 047501 is the valve body assembly only. You must match the coil voltage (typically 24V, 120V, or 240V) to the existing system using an Emerson AMG or DMF series coil.

Can this solenoid valve be installed in any orientation?
While the valve can be mounted in several positions, it is industry best practice to install it with the coil in the upright vertical position to prevent moisture and debris from settling in the plunger tube.

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.