Emerson Alco 047505 Solenoid Valve

The Emerson Alco 100RB2S4 (047505) is a heavy-duty, 2-way normally closed solenoid valve designed for refrigeration and air conditioning liquid, suction, or discharge service. This direct-acting valve features 1/2" ODF sweat connections and is built with a rugged stainless steel enclosing tube to minimize friction and prevent plunger hang-ups. Engineered for high-performance cycling, it provides an R22 capacity of 1.27 tons and an R134a capacity of 1.2 tons at a 2 PSI pressure drop. The 100RB series is known for its high MOPD (Maximum Operating Pressure Differential) of 300 PSI, making it ideal for systems utilizing R407C or R404A refrigerants in addition to R22 and R134a. This refrigeration solenoid valve body requires no minimum pressure drop to open, ensuring reliable operation in low-load conditions. The compact design allows for easy installation in tight mechanical headers while maintaining field-serviceable internal components for long-term reliability.

• Direct-acting configuration: Operates reliably without the need for a minimum pressure differential across the seat.
• ODF sweat connections: Copper extensions allow for torch-brazing without disassembly, saving time on the job site.
• Multi-refrigerant compatibility: Rated for use with HCFC, HFC, and blended refrigerants including R22, R134a, R404A, and R507.
• Durable construction: Features a stainless steel plunger and spring to resist corrosion and mechanical wear in harsh HVACR environments.
• High MOPD: Rated for 300 PSI, providing stable performance even under high discharge pressure conditions.

Is the coil included with the 100RB2S4 valve body?
No, this is the valve body only. It requires a standard Emerson AMG or AMC series solenoid coil, sold separately, to complete the assembly.

Can this valve be mounted in any orientation?
For optimal performance and to prevent debris accumulation on the plunger, the Emerson Alco 047505 should be mounted with the coil in an upright or vertical position, though horizontal mounting is often acceptable per manufacturer specs.

What is the maximum fluid temperature for this solenoid?
The 100RB series is rated for fluid temperatures up to 250°F, making it suitable for hot gas bypass and liquid line applications.

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.