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System Flexibility: Compatible with all Emerson and White-Rodgers thermostats featuring remote indoor sensing terminals (S1
and liquid propane systems
making it a "drop-in" solution for field repairs
Key Benefits Direct Compatibility: Engineered specifically for 1/2" V46 and V47 series pressure-actuated valves to ensure a seamless drop-in fit
Lennox 33J88 Pressure Switch 30067439-890 System Flexibility: Compatible with allThe 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
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