York S1-024-35262-000 SPNO Pressure Switch
The York S1-024-35262-000 SPNO pressure switch is a precision control device designed to monitor airflow and pressure conditions in HVAC systems, set to close on fall at 1.2 inch WC. It operates using a diaphragm mechanism that triggers a single-pole normally open contact when pressure drops below the set point, ensuring proper system operation. Commonly used in furnaces, rooftop units, and air handlers, it enhances safety and performance. Its accurate sensing, dependable switching, and durable construction improve efficiency and reduce maintenance requirements.