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The York S1-026-32266-001 Pressure Switch is an OEM replacement part engineered for precise monitoring of the furnace drain line
linear throttling for sensitive HVAC loops
Engineering precision ensures seamless HVAC part replacement
Constructed with a corrosion-resistant Monel bellows
A failed gasket can cause the furnace to leak carbon monoxide into the cabinet
McDonnell & Miller 6667 Control THPU32HP7Y The York S1-026-32266-001 Pressure SwitchThe McDonnell & Miller 6667 (Part Number 153825) serves as a critical mechanical low water cut off head mechanism specifically engineered for steam boiler safety. Designed for systems with a maximum steam pressure of 20 PSI, this replacement unit ensures reliable burner circuit interruption if water levels drop below the safe operating line. As a float operated control, it utilizes a manual reset functionality, which is essential for compliance in