Duct smoke and fire dampers are fire protection components typically installed in the ductwork of mechanical smoke extraction systems. They remain in the open position under normal conditions and automatically close to prevent smoke and fire during a fire event.

Tobacco; Closes when the flue gas temperature in the exhaust pipe reaches 280 degrees, and maintains smoke leakage and fire resistance integrity requirements for a certain period, serving as a smoke barrier

Fire-retardant function. Main materials: carbon steel, galvanized plate, stainless steel. Reliability of closure during fire incidents, utilizing an alcohol lamp or other fire sources to prevent

Fire valve temperature sensor melted; after the temperature sensor operates, the fire valve should automatically close reliably, including the automatic closure of smoke exhaust fire valves.

Shut off; the gap between the blades or between the blades and baffles should not exceed 2mm. Measure the gap between the blades or between the blades and baffles with a feeler gauge.

After undergoing 10 operation tests, both electric and manual smoke exhaust valves are immediately activated.