Trane VAL19557 Reversing Valve

The Trane VAL19557 Reversing Valve is a critical 4-way heat pump component engineered to manage refrigerant flow direction between heating and cooling cycles. This OEM Trane replacement part features a precise .500 OD (1/2 inch) connection size on the discharge/suction ports, ensuring a streamlined fit for residential and light commercial units. Designed for high-cycle reliability in high-pressure systems, the VAL19557 serves as the direct replacement for VAL8207, correcting legacy flow issues and providing the robust mechanical switching required for year-round climate control.

As a veteran tech, you know that heat pump reversing valve troubleshooting starts with ensuring a tight seal during the changeover. This valve is built with a brass body and copper stubs to facilitate high-integrity brazed joints. It is supplied without the solenoid coil; for a complete overhaul, verify if your existing 24V coil requires a concurrent swap. Using a genuine Trane VAL19557 ensures the refrigerant-side pressure drops remain within factory specifications, preventing compressor slugging or efficiency losses during the defrost cycle.

• Precise Compatibility: Engineered as the primary replacement for VAL8207 and VAL6971, ensuring no modifications are needed to the refrigerant lines.
• Technical Specifications: Features a standard .500 OD connection for common suction line diameters in standard tonnage heat pumps.
• System Integrity: Minimizes bypass leakage between the high and low-pressure sides, maintaining the necessary SEER/HSPF ratings.
• Durability: Constructed with high-grade copper and brass to withstand thermal shock and vibration typical in HVAC reversing valve applications.

What is the connection size for the VAL19557?
This valve uses a .500 OD (1/2 inch) outer diameter connection, typically found on the suction/discharge lines of specific Trane and American Standard air handlers and condensers.

Does this reversing valve include the solenoid coil?
No, the VAL19557 is the valve body only. You must reuse your existing coil or purchase a compatible 24V or 120V solenoid depending on your system's control voltage.

Is this compatible with newer R-410A systems?
Yes, this Trane reversing valve is designed to handle the higher operating pressures associated with modern refrigerants, provided the pipe sizing matches.

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.