Trane VAL2373 TXV

The Trane VAL2373 is a high-performance R-22 thermal expansion valve engineered for 4-ton cooling systems. Designed for precise refrigerant metering, this 4-ton TXV features an O-ring connection design with 3/8-inch inlet and 1/2-inch outlet specifications to ensure a secure, leak-resistant fit in compatible air handlers and evaporator coils. The integrated 5-foot capillary tube provides the necessary reach for optimal sensing bulb placement, allowing for reactive superheat adjustments and preventing liquid slugging in the compressor.

As a genuine HVAC OEM replacement part, the VAL2373 maintains the internal balance required to stabilize system pressures under varying heat loads. This valve is the standard for technicians looking to restore factory-spec efficiency in older Trane and American Standard R-22 refrigeration systems. Using this specialized metering device ensures the evaporator remains flooded for maximum heat transfer without risking compressor damage, making it a critical component for large-scale residential and light commercial service calls.

• Precise Refrigerant Control: Optimizes cooling performance by accurately regulating flow based on evaporator load.
• 5-Foot Capillary: Long capillary length allows for versatile mounting of the sensing bulb on the suction line.
• OEM Compatibility: Exact replacement for Trane VAL2373 and 42FK86, ensuring simplified installation without piping modifications.
• System Durability: Protects the compressor from liquid return during low-load conditions.

Is the VAL2373 compatible with R-410A systems?
No, this expansion valve is specifically calibrated for R-22 refrigerant pressures and flow rates. Using it with R-410A will lead to improper metering and system failure.

What are the port sizes for this valve?
This HVAC expansion valve features a 3/8-inch inlet and a 1/2-inch outlet, designed for standard O-ring style connections found in Trane equipment.

Can I use this on a 3-ton or 5-ton unit?
This valve is rated specifically for 4-ton capacity. Undersizing or oversizing the expansion valve will cause hunting or poor cooling efficiency.

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.