Lennox 11Y31 Thermal Expansion Valve Ton - 5 R-410A

The Lennox 11Y31 is a genuine OEM thermal expansion valve (TXV) designed for 5-ton residential and light commercial HVAC systems using R-410A refrigerant. This thermostatic expansion valve precisely regulates the flow of liquid refrigerant into the evaporator coil by monitoring temperature and pressure within the refrigeration system, ensuring optimal cooling performance and energy efficiency.

Key Features:

• 5-ton capacity for R-410A refrigerant systems
• OEM Lennox part ensuring perfect fit and reliability
• Highly responsive diaphragm with balanced port design
• Maximum operating pressure: 711 PSIG
• Sweat solder connections for secure, leak-proof installation
• Compact design allows integration into various system configurations
• Manufactured by Danfoss to OEM specifications

This expansion valve maintains proper superheat levels in the evaporator coil, which is critical for efficient heat transfer and reliable cooling operation. The valve automatically adjusts refrigerant flow rates based on changing system conditions, maximizing energy efficiency and extending system lifespan. Compatible with Lennox EL, ML, and SL series air conditioning systems, as well as select Armstrong and Ducane models.

OEM Part Numbers: 104413-03, 11Y31