Copeland Comfort Control (Alco) 097723 Control Valve

The Copeland Comfort Control (Alco) 097723 Control Valve (Model EX8-I21) is a high-capacity electronic expansion valve designed for precise refrigerant mass flow management in large-scale HVACR systems. Utilizing a bipolar stepper motor and a ceramic slide and port, this stepper motor driven valve offers superior resolution and repeatability for applications including superheat control, hot gas bypass, and suction gas throttling. Operating on 24Vdc, it features 1 5/8" x 1 5/8" sweat (ODF) connections and a fully hermetic stainless steel construction to prevent external leakage, with a maximum operating pressure of 650 psig.

• Multifunction Versatility: Configurable for expansion, liquid injection, or pressure regulation duties across HFC, HCFC, and subcritical CO2 systems.
• Linear Flow Precision: Provides continuous modulation from 10% to 100% capacity with a high-resolution 2600 full step range for stable system operation.
• Fast Response: Optimized for rapid load changes with a full travel stroke time of approximately 5.2 seconds at 500 Hz.
• Positive Shut-Off: Engineered to eliminate the need for an additional solenoid valve, simplifying liquid line piping.
• Durable Construction: Employs a direct coupling (no gear mechanism) and ceramic internal components for minimal wear and high reliability.

Common Questions

Is the EX8-I21 compatible with CO2?
Yes, this valve is rated for subcritical CO2 applications and all common HFC/HCFC refrigerants.

What electrical connection is required?
The valve uses a 4-pin terminal and requires an M12 plug-in cable assembly, typically a 24Vdc constant current driver.

Can I use this valve for bi-flow heat pump applications?
The EX8-I21 is a uni-flow model. For heat pump cycles requiring bi-directional flow, verify the specific bi-flow variant or use a bridge rectifier circuit as per system design.

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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.