Differential Pressure Switch De Dietrich 7718551

A differential pressure switch is a safety and control device used in boilers and HVAC systems to monitor pressure differences across filters, fans, or heat exchangers. It activates or deactivates components based on pressure changes, helping to prevent issues like airflow blockage or improper combustion. This switch is critical for maintaining system efficiency and safety. When replacing a differential pressure switch, ensure it has the correct pressure range and electrical ratings for your equipment. Regular testing can verify proper operation and avoid unexpected shutdowns.