Automatic Reset: Self-correcting design restores system power without requiring a manual service call

Designed as a critical OEM replacement part

cracked ceramic due to thermal shock

This robust bellows actuated pressure control operates within a regulation range of 14

it is frequently utilized in Trane air handlers and rooftop units like the TWE240B and SEHCC4000 series

Lennox 59W21 TXV Freon Automatic Reset: Self-correcting design restoresThe Lennox 59W21 Thermal Expansion Valve (TXV) is a critical 8 ton metering device engineered for precision refrigerant control in high capacity commercial HVAC systems. Designed with 3 8" x 1 2" ODF sweat connections, this valve ensures accurate superheat maintenance across varying load conditions, preventing liquid floodback and protecting the compressor. The 59W21 features a 30 inch capillary tube and is officially rated as the direct replacement