Trane VAL18771 Thermostatic Expansion Valve

The Trane VAL18771 is an OEM thermostatic expansion valve (TXV) designed for use in Trane and American Standard HVAC systems. This critical refrigeration component precisely meters the flow of refrigerant into the evaporator coil, ensuring optimal system performance and efficiency.

Key Features:

• Genuine Trane OEM replacement part for reliable performance
• Precisely controls refrigerant flow based on superheat settings
• Helps maintain proper evaporator temperature and system efficiency
• Designed for commercial and residential HVAC applications
• Factory-calibrated for accurate refrigerant metering

The thermostatic expansion valve is essential for maintaining the proper refrigerant charge in the evaporator coil. It responds to changes in superheat at the evaporator outlet, automatically adjusting refrigerant flow to match system load conditions. This ensures optimal cooling performance while protecting the compressor from liquid refrigerant slugging.

Installation should be performed by a qualified HVAC technician in accordance with Trane specifications and local codes. Proper system evacuation and refrigerant charging procedures must be followed.