The Trane VAL08678 Thermostatic Expansion Valve (TXV), also known as X15111278070, is a premium-grade R410A refrigerant valve designed for 3-ton systems. Featuring a 5/8" connection, this TXV ensures precise refrigerant flow control, optimizing system efficiency and performance. It's a critical replacement part for HVAC professionals servicing Trane air conditioning or heat pump systems. Key Features Genuine Trane part for reliable performance Compatible with R410A refrigerant 3 Ton capacity 5/8" ODF connection Ensures accurate superheat control Enhances system efficiency and longevity Specifications Part Numbers: VAL08678, X15111278070 Refrigerant: R410A Capacity: 3 Ton Connection Size: 5/8" Valve Type: Thermostatic Expansion Valve (TXV) Application: Air conditioners and heat pumps Compatible Models Please consult your Trane system manual or technician to verify compatibility. Some commonly compatible systems include: Trane 3-ton R410A residential and light commercial models Air handlers and evaporator coils rated for 36,000 BTU/hr Why Choose This Item This OEM Trane TXV ensures your HVAC system maintains optimal refrigerant flow and performance under varying load conditions. With a 5/8" inlet/outlet and R410A compatibility, it's an essential part for accurate superheat regulation, helping to extend the life of your compressor and reduce energy consumption. Ideal for upgrades or replacements in Trane systems.