مفتاح الضغط التفاضلي De Dietrich 721642000

A differential pressure switch is a safety and control device used in boilers and burners to monitor pressure differences across filters, fans, or heat exchangers. It helps detect issues like clogged filters or fan failure, triggering safety shutdowns to prevent damage. This switch is vital for reliable and safe operation of heating equipment. When replacing, ensure compatibility with your system's pressure range and connections.