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Durable Construction: Features high-quality piston assemblies and stainless steel compression springs for long-term resilience
verify the outer diameter and thickness before installation
Staggers electrical load to prevent residential power surges during heating cycles
maintaining a standard European mounting footprint for straightforward field replacement
it is compatible with many Nortek Global HVAC brands
Lennox 12J43 TXV 321702-401 Durable Construction: Features high-quality pistonThe Lennox 12J43 Thermal Expansion Valve (TXV) is a critical metering component engineered specifically for 2 ton residential and commercial R410A refrigerant systems. This OEM Lennox expansion valve features a 3 8" ODM (Outside Diameter Male) inlet and a 1 2" ODF (Outside Diameter Female) outlet, ensuring a precise fit for outdoor NXT units and matching indoor coils. By continuously monitoring evaporator superheat, the 12J43 TXV regulates refrigerant