Emerson Alco 049585 Solenoid Valve

The Emerson Alco 049585, also identified as the 200RB3T3T solenoid valve, is a pilot-operated, 2-way normally closed valve designed for high-performance refrigeration and air conditioning systems. This robust refrigeration solenoid valve features 3/8" ODF sweat connections and is engineered for liquid, suction, or hot gas service applications. With an R22 cooling capacity of 4.8 tons and an R134a capacity of 3.6 tons, it provides reliable flow control across diverse thermal loads. The normally closed solenoid valve body includes a mounting stud for secure installation, minimizing vibration-induced fatigue in the piping. Built to withstand a maximum fluid temperature of 250°F and a maximum working pressure of 680 psig, this Emerson 200RB series valve ensures a high maximum operating pressure differential (MOPD) during demanding cycles. Its field-serviceable design allows for internal component access without removing the valve body from the line, streamlining maintenance for commercial HVACR technicians.

Key Benefits for Contractors

• Optimized Flow Dynamics: Pilot-operated piston design ensures consistent opening even at low pressure differentials.
• Enhanced Compatibility: Suitable for use with CFC, HCFC, and HFC refrigerants including R22, R134a, R404A, and R507.
• Durable Construction: Heavy-duty brass body and stainless steel internal parts prevent corrosion in high-moisture environments.
• Simplified Installation: Integrated mounting stud and extended 3/8" ODF sweat ends facilitate fast brazing and secure positioning.
• Reliable Sealing: Synthetic seated valve provides tight shut-off to prevent refrigerant migration during the off-cycle.

Common Questions

What is the maximum operating pressure differential for the 200RB3T3T?
This valve is rated for a MOPD of 300 psig with standard AC coils, making it suitable for high-head pressure applications.

Does this valve body include the solenoid coil?
No, the 049585 is the valve body only. It requires a compatible Emerson AMG or ASC2 series coil for operation.

Can this solenoid valve be mounted in any orientation?
For optimal performance and to prevent debris accumulation, it should be mounted upright with the coil on top, though it can be tilted up to 45 degrees from vertical.

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.