Description
The Modine 5H0722750005 SPST Pressure Switch 0.64″ WC is an air-pressure-sensing unit used to detect airflow or draft conditions in heating equipment. It operates by initiating an electrical response when the pressure reaches a calibrated threshold, allowing the system to verify safe operating conditions before continuing operation. In HVAC systems, it is placed in furnaces, unit heaters, and combustion-based assemblies to confirm proper airflow before ignition. The switch is mounted in the pressure-sensing line and supports safe startup and steady airflow monitoring.
