Smoke and fire dampers are fire protection components typically installed on the ducts of mechanical smoke exhaust systems, remaining open during normal operation and opening to exhaust smoke in the event of 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. In the event of a fire, ensures reliable closure; use an alcohol lamp or other fire source to activate the fire prevention

Fire valve temperature sensor fuse; 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 blades or between blades and baffles shall not exceed 2mm. Measure the gap between blades or between blades and baffles using a feeler gauge.

After 10 consecutive operation tests, both the electric and manual smoke exhaust valves immediately open.