Emerson Alco 064283 Solenoid Valve

The Emerson Alco 064283 (Model 200RB7T7M) is a heavy-duty, pilot-operated refrigeration solenoid valve designed for high-capacity liquid, suction, or discharge gas service. Built for technicians who require field reliability, this 2-way normally closed valve features a 7/8" ODF sweat connection with extended copper ends, allowing for straightforward brazing without the need for internal disassembly. It is specifically engineered to handle significant cooling loads, offering a refrigerant capacity of 17 tons for R22 and 12.7 tons for R134a, making it a staple for commercial HVACR systems. The integrated manual stem provides a critical override for system testing and emergency bypass during power loss or maintenance cycles. Utilizing a PTFE O-ring for superior external sealing and a maximum operating pressure differential (MOPD) of 300 psig, this normally closed solenoid valve ensures tight shut-off and consistent performance even in high-pressure refrigeration valve applications.

• Extended Copper Ends: Facilitates rapid installation and secure brazing connections while protecting the valve body from heat damage.
• Integrated Manual Stem: Allows for manual override and simplified troubleshooting of the refrigerant circuit without energizing the coil.
• High-Pressure Tolerance: Rated for a maximum working pressure of 500 psig and a maximum fluid temperature of 250°F.
• Multi-Refrigerant Compatibility: Optimized for use with R22, R134a, R404A, R507, and other common HCFC/HFC refrigerants.
• Maintenance-Friendly Design: Features field-serviceable parts and a universal coil family that fits across all 200RB series bodies.

Can this valve be mounted in any orientation?
For optimal performance, it is recommended to mount the valve with the solenoid coil in the vertical upright position; mounting more than 90° from vertical is not advised.

What is the minimum pressure drop required for operation?
As a pilot-operated valve, it requires a minimum operating pressure drop of 2 psi to ensure the diaphragm or piston shifts correctly from the closed to open position.

Does the valve include the solenoid coil?
The 200RB7T7M is typically supplied as a valve less coil (VLC). You must select the appropriate voltage coil (AC or DC) to match your system's electrical requirements.

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.