Trane VAL8359 Valve

The Trane VAL8359 is a technical-grade 6-ton heat pump reversing valve engineered to manage refrigerant flow direction with precision. Designed for both residential and light commercial integration, this 4-way reversing valve features 1/2" x 7/8" ODF sweat connections and is powered by a standard 24V solenoid coil. As a critical component in high-capacity HVAC refrigeration cycles, it enables seamless switching between heating and cooling modes. The VAL8359 is a direct OEM replacement and is technically identical to the V6-4140K1-1TC secondary part number. Built to withstand high-pressure environments up to 650 PSI and operating temperatures ranging from -25°F to 120°F, this valve ensures system efficiency in demanding outdoor units. For veteran technicians, this reversing valve pilot-operated design simplifies the transition between cycles while maintaining the thermal integrity of Trane condensing units.

Key Benefits:

• Compatible with high-capacity 6-ton HVAC systems for reliable refrigerant routing.
• Features a standard 24V coil for easy integration with existing low-voltage control circuits.
• Durable 1/2" x 7/8" ODF connections provide a secure, leak-resistant fit during brazing.
• Engineered to replace V6-4140K1-1TC for exact drop-in field installation.
• Maintains consistent pressure differential required for smooth slide operation in heat pumps.

Common Questions:

Why is my heat pump stuck in one mode?
This is often caused by a failed 24V solenoid coil or a mechanical slide that has become stuck within the valve body. If the coil is energized but the valve fails to shift, the internal "canoe" may be seized, necessitating a VAL8359 replacement.

Can I use the VAL8359 to replace a V6-4140K1-1TC?
Yes, the Trane VAL8359 is the direct OEM cross-reference and identical match for the V6-4140K1-1TC, ensuring the same port configuration and electrical specs.

How do I test for an internal leak in the reversing valve?
Check the temperature differential between the suction line from the evaporator and the permanent suction line on the valve. A difference exceeding 3°F typically indicates an internal bypass, meaning the valve is no longer sealing correctly.

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.