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this thermal expansion valve is internally compensated and calibrated specifically for the pressure-temperature relationship of R410A
Can I replace a manual reset limit with an auto-reset model
It’s designed to safeguard the compressor by continuously monitoring suction pressure
rating plate labels
protecting sensitive instrumentation from corrosion and failure
Lennox 33J88 Pressure Switch 30067439-890 this thermal expansion valve isThe Lennox 33J88 Pressure Switch is a critical safety component designed for precise draft monitoring in high efficiency gas furnaces. Rated for a set point of 4. 50" WC, this SPST (Single Pole Single Throw) switch provides reliable circuit closure to the control board once the inducer motor establishes the required negative pressure. This part is a direct factory replacement for Lennox model 33J8801, ensuring a drop in fit with existing mounting