Weil McLain 383-900-080 Pressure Switch 3.25" WC

The Weil McLain 383-900-080 Pressure Switch 3.25" WC is a sensing component that monitors airflow or combustion pressure within compatible heating equipment. It assists to verify that the required pressure level has been reached before allowing the operating sequence to continue, contributing to safe and controlled system performance. Commonly installed in boilers and other HVAC systems, it connects with the control circuit to monitor pressure conditions during operation. Its role within the equipment is to provide pressure status feedback, supporting proper ignition and normal heating cycle operation.