Trane VAL8358 Reversing Valve

This Trane VAL8358 Reversing Valve is a critical 4-way pilot-operated component engineered for 6-ton heat pump systems. As an OEM Trane replacement part, it ensures precise refrigerant flow reversal, allowing seamless switching between heating and cooling cycles. This valve features 1/2" x 3/4" ODF solder connections and is designed for use with a 24V solenoid coil (sold separately or reused from the existing assembly). Technicians should note that this specific model, often cross-referenced as VAL08358, is the standard for high-capacity Trane residential and light commercial condensers where reliable changeover is mandatory. The heavy-duty brass construction and internal slide assembly are built to withstand the pressure seating requirements of R-410A systems. When diagnosing heat pump reversing valve troubleshooting issues, verify the 24V coil resistance and pressure differential before replacement to ensure the Trane heat pump not cooling or heating symptom is not due to a failed solenoid or charge imbalance.

• Direct OEM Compatibility: Ensures exact fitment and factory-spec performance for 6-ton HVAC units, eliminating the need for manifold modifications.
• Precision Refrigerant Control: High-tolerance internal slide prevents bypass leaks, maintaining system efficiency in both modes.
• Standardized Connections: The 1/2" suction and 3/4" discharge ODF ports allow for standard brazing techniques during field installation.
• System Reliability: Engineered to handle the high-pressure demands of modern heat pump reversing valve replacement applications.

• How do I confirm the VAL8358 is failing? Check for a temperature differential of more than 3°F between the permanent suction line and the suction line from the evaporator. If the 24V signal is present at the coil but the valve fails to shift, a mechanical hang-up is likely.
• Does this valve come with the solenoid coil? This is the valve body only. Professional practice suggests inspecting the existing 24V reversing valve coil for cracks or shorts; replace if resistance is outside the 50-80 ohm range.
• Is this compatible with R-22 or R-410A? Yes, this Trane reversing valve is rated for the operating pressures of both legacy and modern refrigerants used in 6-ton platforms.

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.