Smoke and fire dampers are fire protection components typically installed on the ducts of mechanical smoke extraction systems, remaining in an open position under normal conditions and opening during a fire.

Tobacco; Closes when the flue gas temperature in the exhaust pipe reaches 280 degrees, and meets the requirements for smoke leakage and fire resistance integrity within a certain time, acting as a smoke barrier

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

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

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

After 10 consecutive opening tests for reliability, both electric and manual smoke exhaust valves immediately open.