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For sweat-style fittings
The Maxitrol M520B-3/4 is a specialized 3/4" NPT Modulating Gas Valve engineered for technical precision in negative pressure (pull-through) and indirect fired atmospheric burner applications
The York 025-37888-000 is an essential industrial heating component engineered for precise thermal management in commercial refrigeration and HVAC systems
5 mm electrode gap
Lennox 69W56 Pressure Switch 326010-701 For sweat-style fittingsThe Lennox 69W56 Pressure Switch is a critical dual stage pressure switch engineered for precision airflow monitoring in Lennox high efficiency gas furnaces. Built to strictly meet OEM specifications (102737 04), this 2 stage furnace pressure switch features factory calibrated set points of 0. 60" W. C. for high stage and 0. 25" W. C. for low stage. These precise thresholds ensure that the inducer motor is moving sufficient combustion air before the