Trane VAL2188 TXV

The Trane VAL2188 is a high-performance 8-ton thermostatic expansion valve engineered specifically for technical professionals managing large-capacity R-22 refrigerant systems. This HVAC expansion valve features a precise 1/2 x 7/8 inch connection configuration, ensuring a secure and reliable fit during field TXV replacement. Designed to maintain optimal superheat and refrigerant flow, the VAL2188 is rated for pressures up to 700 PSI, making it a rugged solution for demanding commercial and residential air conditioning applications. By accurately metering the liquid refrigerant entering the evaporator coil, this mechanical metering device protects the compressor from liquid slugging while maximizing heat absorption. For technicians troubleshooting inconsistent cooling or frozen coils, this OEM-spec Trane TXV provides the reliability needed for long-term system stability. Proper installation requires checking the sensing bulb position—ideally at the 4 or 8 o’clock position—and ensuring a 500-micron vacuum to prevent moisture contamination in the R-22 circuit.

• Precise Superheat Control: Automatically adjusts refrigerant flow to maintain the ideal temperature differential, protecting the HVAC compressor.
• High-Pressure Durability: Robust construction rated at 700 PSI to handle the rigors of 8-ton cooling loads without failure.
• Exact OEM Compatibility: Designed for seamless integration into existing Trane air conditioning and heat pump units using R-22 refrigerant.
• System Protection: Acts as a critical safeguard against evaporator flooding and compressor overheating.

Is the Trane VAL2188 compatible with R-410A systems?
No, this specific valve is designed and calibrated exclusively for use with R-22 refrigerant. Mixing refrigerant types or using incompatible valves will result in system failure.

What are the connection sizes for this 8-ton TXV?
The VAL2188 features a 1/2-inch inlet and a 7/8-inch outlet to accommodate the high-volume flow requirements of an 8-ton capacity system.

Where should the sensing bulb be mounted?
For peak performance, the sensing bulb must be securely strapped to the horizontal suction line at the 4 or 8 o’clock position and properly insulated to ensure accurate temperature sensing.

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.