Trane VAL8391 Valve 320788-702 Optimized Combustion: Maintains the correct

Optimized Combustion: Maintains the correct fuel-to-air ratio for propane gas

What is the difference between the 14004406-300 and the 14004406-300/U

This OEM replacement fan blade provides the exact physical tolerances required for field repairs

High-Temperature Durability: Constructed from thermally stable composite materials to prevent warping or cracking under varied furnace cabinet temperatures

Manufactured to high-tolerance standards for reliable performance in high-cycle residential furnace applications

Trane VAL8391 Valve 320788-702 Optimized Combustion: Maintains the correctThe Trane VAL8391 is a heavy duty, 4 way heat pump reversing valve engineered for 10 ton commercial and industrial HVACR applications. This OEM Trane replacement part (also identified as VAL08391) is critical for managing refrigerant flow direction, allowing a single system to bridge the gap between heating and cooling cycles. Designed with a robust brass body, it features 1 1 8" x 1 3 8" ODF solder connections to ensure high pressure stability and