Description
The Trane VAL10371 is an OEM thermostatic expansion valve (TXV) engineered for reliable, precise refrigerant metering in R-410A cooling systems rated at 4 tons of capacity. Designed to Trane’s exacting quality standards, this valve maintains optimal superheat control across varying load conditions, protecting the compressor and maximizing system efficiency.
Key Features
- OEM Trane replacement TXV — direct-fit for compatible Trane equipment
- Rated for 4-ton system capacity
- Designed for use with R-410A refrigerant
- 3/8″ ODF liquid line inlet connection
- 1/2″ ODF evaporator outlet connection
- Maintains precise superheat control to protect the compressor and optimize efficiency
- Helps prevent refrigerant flood-back and system short-cycling
Application
The VAL10371 is intended as a direct OEM replacement for compatible Trane split-system and packaged air conditioning units using R-410A refrigerant. Proper TXV operation is critical to maintaining rated system efficiency (EER/SEER), preventing compressor damage, and ensuring long-term equipment reliability.
Installation Notes
- Always recover refrigerant before servicing the metering device
- Verify system compatibility with Trane equipment documentation prior to installation
- Braze connections using nitrogen purge to prevent oxidation inside the refrigerant circuit
- Confirm bulb placement and orientation per Trane service instructions for accurate superheat sensing







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