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and G26Q3-75 series
Engineered to manage critical HVAC ignition sequences
Normally Closed Logic: Features SPST NC/C operation for reliable integration into existing safety circuits
It serves as a direct upgrade or replacement for several legacy series
Lennox Y8736 TXV Kit 30067439-890 and G26Q3-75 seriesThe Lennox Y8736 TXV Kit is a field installed 3 ton thermal expansion valve specifically engineered for high efficiency R410A air conditioning and heat pump systems. As a professional grade refrigerant flow control device, this kit ensures precise superheat maintenance across varying load conditions, preventing liquid slugging and evaporator starve out. This TXV replacement kit is the direct performance alternative for legacy part numbers 12J19,
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