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The Lennox 89M57 is a critical OEM replacement gas valve designed for single-stage heating legacy systems
and various elastomeric seals and O-rings designed to withstand the rigorous demands of hot water and steam applications
plus a plastic hose barb for venting applications
in many Lennox HVAC systems
Beckett Igniter 7622TW04U Well R-134A The Lennox 89M57 is aThe Beckett 7622TW04U is a professional grade 3 4" NPT brass immersion well designed for high performance temperature sensing in hydronic heating systems. Engineered for durability, this thermowell features a robust brass and copper construction that provides superior structural integrity compared to older polymer models. With an insulation depth of 4 3 4 inches and an insertion depth of 1 5 8 inches, this component ensures precise thermal transfer
