Industrial-Grade Construction: Built to withstand high-temperature environments and thousands of cycles without diaphragm fatigue

The S1-025-30394-700 ensures system integrity by maintaining specific temperature tolerances mandated by York

this assembly ensures the proper flame geometry required to consistently heat the thermocouple and initiate the main burner cycle without nuisance dropouts

The Belimo B213B is a precision-engineered 1/2 inch 2-way characterized control valve designed for demanding hydronic HVAC applications

York S1-7975-388P/A Flame Sensor Els PW 17895 Industrial-Grade Construction: Built to withstandAs a seasoned technician, you know that a reliable York S1 7975 388P A Flame Sensor is the frontline defense against hazardous unburned gas buildup. This genuine OEM York flame sensor (Part Number S1 7975 388P A) is engineered for precise flame rectification, converting AC voltage into a DC microamp signal that the furnace control board requires to maintain the gas valve circuit. If you are seeing erratic shutdowns or short cycling, checking for a