Draught smoke and fire damper is a fire protection component commonly installed on the ducts of mechanical smoke exhaust systems, typically in an open position at all times, and opens for exhaust during a fire.

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

Fire-retardant action. Main materials: carbon steel, galvanized plate, stainless steel. Reliable closure in the event of a fire, utilizing an alcohol lamp or other fire source to prevent

Fire valve temperature sensor melts; upon the temperature sensor activating, the fire valve should automatically close reliably, including the automatic closure of the smoke exhaust fire valve.

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 with a feeler gauge.

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