Armstrong Furnace R101432-13 SPST Pressure Switch -0.60 Inch Water Column
The Armstrong Furnace R101432-13 SPST pressure switch is a safety control designed to monitor air pressure in HVAC systems. Rated at -0.60 inch water column, it ensures proper draft by detecting pressure changes within the furnace venting system. The switch opens or closes an electrical circuit based on airflow conditions, preventing operation if unsafe pressure levels occur.