Description
The Trane VAL2373 is a factory-engineered thermostatic expansion valve (TXV) designed for R-22 refrigerant systems rated at 4 tons of cooling capacity. Built to Trane’s exacting OEM standards, this valve delivers precise refrigerant metering to maintain optimal evaporator superheat, protecting the compressor and maximizing system efficiency.
Featuring 3/8″ inlet and 1/2″ outlet connections, the VAL2373 is a direct-fit replacement for compatible Trane and American Standard residential and light-commercial cooling equipment. The included 5-foot capillary tube provides the flexibility needed for proper bulb placement on the suction line, ensuring accurate superheat sensing and stable valve operation across a wide range of operating conditions.
Key Features
- OEM Trane replacement thermostatic expansion valve (TXV)
- Designed for R-22 refrigerant systems
- 4-ton rated cooling capacity
- 3/8″ inlet x 1/2″ outlet connections
- 5-foot capillary tube included for flexible bulb mounting
- Maintains precise evaporator superheat for compressor protection
- Direct OEM replacement for compatible Trane and American Standard equipment
Application
- Refrigerant: R-22
- Capacity: 4 Ton
- Inlet Connection: 3/8″
- Outlet Connection: 1/2″
- Capillary Tube Length: 5 feet
- Valve Type: Thermostatic Expansion Valve (TXV)
Why Choose the Trane VAL2373?
As an OEM-sourced component, the VAL2373 ensures compatibility and reliability that aftermarket alternatives cannot guarantee. Proper refrigerant metering through a quality TXV reduces compressor wear, lowers energy consumption, and extends overall system life — making this valve a smart investment for any R-22 service or retrofit application.







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