Trane VAL8989 TXV

The Trane VAL8989 TXV is a high-performance, 5-ton thermostatic expansion valve engineered specifically for R410A refrigerant systems. Designed for precise metering device control, this valve features 3/8" inlet and 1/2" outlet sweat connections, ensuring a reliable fit for standard liquid line and evaporator coil configurations. Built with a rugged brass body and stainless steel internal components, it maintains optimal evaporator superheat across a wide range of operating pressures, which is critical for protecting the compressor from liquid slugging and preventing evaporator starving.

As a veteran-grade OEM HVAC part, the VAL8989 includes an integrated internal strainer to capture debris that can lead to valve hunting or total blockage. Its robust construction makes it a staple for service technicians performing TXV replacement on Trane and American Standard residential or light commercial units. Whether you are addressing high superheat issues or a stuck-closed valve, this 5-ton expansion valve provides the accurate modulation required to maximize cooling efficiency and system longevity in high-pressure R410A environments.

• Precise Refrigerant Control: Maintains steady superheat to ensure the evaporator remains fully active without risking liquid floodback to the compressor.
• OEM Reliability: Genuine Trane component ensures exact factory specifications for port sizing and pressure ratings, reducing installation time and call-backs.
• Contaminant Protection: Features a built-in strainer to mitigate residues from clogging the orifice, a common failure point in high-tonnage systems.
• Durable Construction: Engineered with corrosion-resistant brass and high-grade stainless steel to handle the thermal stresses of R410A heat pump and cooling cycles.

• How do I confirm if my existing TXV is failing? Check for high superheat at the evaporator outlet or frosting on the expansion valve body, which often indicates a restricted orifice or lost power head charge.
• Is the VAL8989 compatible with other refrigerants? No, this valve is specifically calibrated for the pressure-temperature characteristics of R410A and should not be used in R22 or R407C retrofits.
• Are the connections flare or sweat? This model utilizes 3/8" x 1/2" sweat (ODF) connections, requiring standard brazing techniques and nitrogen purging to prevent internal oxidation.

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.