Copeland Comfort Control (Alco) 063103 Expansion Valve

The Copeland Comfort Control (Alco) 063103 is a high-capacity thermal expansion valve engineered for precise refrigerant metering in commercial HVACR systems. Designed as a 15-ton expansion valve, this component is optimized for R22 expansion valve applications and R407C refrigerant control. It features a 5/8" x 7/8" ODF sweat connection and a straight-through body configuration for streamlined integration into existing liquid lines. The inclusion of an externally equalized TXV design ensures accurate superheat maintenance even in systems with significant evaporator pressure drops, preventing hunting and improving overall evaporator efficiency. With a 5-foot capillary tube and a Maximum Operating Pressure (MOP) 100 PSI charge, the Alco 063103 protects the compressor by limiting suction pressure during high-load startups. This Alco T-Series valve is a standard-setting choice for technicians requiring reliable, commercial HVAC expansion valve performance in medium to large-tonnage equipment.

• 15-ton nominal capacity provides robust refrigerant metering for large-scale commercial air conditioning and refrigeration.
• Dual refrigerant compatibility allows for seamless operation with R22 and R407C systems.
• External equalization compensates for internal pressure drops, ensuring stable superheat and preventing coil starving.
• MOP 100 PSI charge acts as a safeguard, protecting the motor from overload during hot pull-downs.
• ODF sweat connections (5/8" inlet, 7/8" outlet) ensure leak-free, brazed joints in high-vibration environments.
• 5-foot capillary tube offers flexible sensing bulb placement for optimized thermal response.

How does the MOP 100 PSI feature benefit the system?
The Maximum Operating Pressure charge limits the expansion valve from opening too far during high-load conditions, such as after a defrost cycle or initial startup. This prevents the suction pressure from rising above 100 PSI, protecting the compressor motor from excessive torque and potential failure.

When should this externally equalized valve be used over an internally equalized model?
An externally equalized valve like the 063103 is mandatory in systems where the pressure drop across the evaporator is significant. It senses the actual pressure at the evaporator outlet, providing a more accurate superheat reading than internal sensing, which leads to better coil utilization.

Can this valve be field-repaired or adjusted?
While the superheat is adjustable to fine-tune system performance, the power assembly and internal components are matched for the 15-ton rating. Always use a calibrated pressure-temperature chart for R22 or R407C when setting superheat to ensure the compressor remains protected from liquid slugging.

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.