Description
Lennox 12J43 Thermostatic Expansion Valve Overview
The Lennox 12J43 is an OEM thermostatic expansion valve (TXV) engineered for reliable refrigerant metering in R410A residential and light-commercial cooling systems rated at 2 tons. Designed as a direct factory replacement, this valve maintains precise superheat control to protect the compressor and maximize system efficiency.
Key Features
- OEM Lennox replacement TXV for assured fit and performance
- Rated for R410A refrigerant — compatible with modern, environmentally compliant systems
- 2-ton (24,000 BTU/hr) capacity rating
- 3/8″ ODM (male flare) inlet connection for liquid line hookup
- 1/2″ ODF (female flare) outlet connection for evaporator coil hookup
- Provides accurate superheat regulation to protect the compressor from liquid slugging
- Helps maintain optimal system efficiency and consistent cooling performance
- Built to Lennox OEM specifications for reliable long-term operation
Application
The Lennox 12J43 TXV is intended for use in split-system air conditioning and heat pump applications utilizing R410A refrigerant. It meters liquid refrigerant into the evaporator coil in response to suction line superheat, ensuring the evaporator operates at peak efficiency across varying load conditions. Always verify compatibility with your specific Lennox equipment model before installation.
Specifications
- Part Number: 12J43
- Brand: Lennox
- Refrigerant: R410A
- Capacity: 2 Ton
- Inlet Connection: 3/8″ ODM
- Outlet Connection: 1/2″ ODF
- Valve Type: Thermostatic Expansion Valve (TXV)
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