The Lennox 12J36 (part number 103366-08) is an OEM expansion valve engineered for use in 4-ton indoor Next Gen (NXT) HVAC systems. This thermal expansion valve (TXV) precisely meters refrigerant flow into the evaporator coil, maintaining optimal superheat for efficient and reliable operation. Designed specifically for R-410A refrigerant systems, it ensures consistent cooling performance and compressor protection under varying load conditions.Key Features and Specifications:
- Part Number: 12J36 / 103366-08
- Application: Indoor coil, 4-ton NXT residential or light commercial systems
- Refrigerant Type: R-410A
- Valve Type: Thermal Expansion Valve (TXV)
- Tonnage Rating: 4 Tons (48,000 BTU/hr)
- Inlet Connection: 3/8" SAE Flare
- Outlet Connection: 1/2" SAE Flare
- Equalizer Type: External equalizer port for pressure balance
- Function: Regulates refrigerant flow into the evaporator to maintain ideal superheat
- Construction: Brass body with stainless steel internal components for durability
- Operating Temperature Range: -40°F to 160°F
- OEM Compatibility: Designed and approved for use with compatible Lennox indoor coils in NXT systems