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protecting the expansion valve from premature wear and ensuring HVAC system reliability
Flexible Installation: The 48-inch length offers maximum versatility for field technicians servicing deep-set burner trays
33" WC trip point matches original factory specifications for system safety
Common Questions What is the primary application for the P72AA-27
Lennox 59W34 Pressure Switch 320788-702 protecting the expansion valve fromThe Lennox 59W34 High Pressure Switch is an essential OEM safety component designed for heavy duty application in residential and commercial cooling systems. This SPST high pressure control is engineered to monitor high side refrigerant pressures, providing critical protection for the compressor and system piping. This switch actuates at 640 PSI to immediately open the control circuit and resets at 475 PSI, ensuring the unit stays offline until
