مفتاح الضغط التفاضلي SGB400-610E De Dietrich JJJ137307246

The differential pressure switch for SGB400-610E models monitors the pressure difference across the heat exchanger or flue to ensure proper airflow and combustion. It acts as a safety device, shutting down the boiler if pressure levels deviate from normal. This switch is essential for maintaining safe operation and preventing damage. Replacing a malfunctioning pressure switch helps restore reliable safety monitoring.