Carrier EA03XC391 TXV

The Carrier EA03XC391 is a high-performance Thermostatic Expansion Valve (TXV) designed specifically for large-tonnage residential and light commercial cooling applications. This 5 Ton R22 expansion valve is a precision-engineered Carrier OEM replacement part, serving as the direct functional successor to the legacy EA03XC375 model. Built for durability and precise superheat regulation, it utilizes 5/8" x 1-1/8" ODF sweat connections to ensure a leak-free, high-integrity joint in the field. By accurately modulating R22 refrigerant flow into the evaporator coil, this external equalizer TXV prevents liquid slugging and ensures the compressor operates within safe parameters. Whether you are performing a seasonal overhaul or a critical emergency repair, utilizing genuine Carrier HVAC parts like the EA03XC391 maintains factory-specified pressure drops and system efficiency across varying load conditions.

• Direct OEM Match: Provides a seamless EA03XC391 replacement for EA03XC375, eliminating the need for extensive piping modifications.
• Heavy-Duty Capacity: Rated for 5-ton HVAC systems, making it ideal for large residential split systems and heat pumps.
• Precise Superheat Control: Optimizes the evaporator's thermal exchange surface to maximize SEER performance.
• Standard Fitting Sizes: Features 5/8" x 1-1/8" ODF (Outside Diameter Female) connections for standard brazing procedures.
• System Protection: Actively manages refrigerant mass flow to safeguard the compressor from floodback.

Is the EA03XC391 compatible with R410A systems?
No, this specific model is calibrated strictly for R22 refrigerant systems. Using it with R410A will result in improper superheat and potential system failure.

Does this valve include the sensing bulb and mounting hardware?
Yes, this Carrier TXV valve assembly includes the integrated sensing bulb required for accurate suction line temperature feedback.

Can I use this to replace a 5-ton TXV from another brand?
While the 5/8" x 1-1/8" ODF connections are standard, this is a Carrier EA03XC391 OEM part. Compatibility with non-Carrier/Bryant/Payne equipment should be verified via technical data sheets to ensure correct pressure drop characteristics.

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.