Description
The Trane VAL7747 is an OEM thermostatic expansion valve (TXV) engineered for reliable, precise refrigerant flow control in 5-ton R-22 cooling systems. Designed and manufactured to Trane’s exacting specifications, this TXV meters liquid refrigerant into the evaporator coil based on real-time superheat conditions — maximizing system efficiency, protecting the compressor from liquid slugging, and ensuring consistent comfort performance.
With 3/8″ liquid-line inlet and 1/2″ outlet connections, the VAL7747 is a direct-fit replacement for compatible Trane air conditioning and heat pump systems originally charged with R-22 refrigerant. Its thermostatic sensing element continuously monitors evaporator outlet temperature and adjusts flow accordingly, keeping superheat within the optimal operating range across varying load conditions.
Key Features
- OEM Trane thermostatic expansion valve (TXV) — direct replacement for compatible systems
- Rated for 5-ton R-22 refrigerant systems
- 3/8″ liquid-line inlet x 1/2″ outlet connection sizing
- Thermostatic sensing element for automatic superheat regulation
- Protects compressor by preventing liquid refrigerant slugging
- Optimizes evaporator efficiency across varying load conditions
- Built to Trane OEM quality and performance standards
Applications
- Trane R-22 split-system air conditioners and heat pumps
- 5-ton residential and light commercial cooling systems
- Direct replacement in systems requiring the Trane VAL7747 TXV
Specifications
- SKU / Part Number: VAL7747
- Brand: Trane
- Refrigerant Type: R-22
- System Capacity: 5 Ton
- Inlet Connection: 3/8″
- Outlet Connection: 1/2″
- Valve Type: Thermostatic Expansion Valve (TXV)
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