Duct smoke and fire damper is a fire protection component, commonly installed on the pipes of mechanical smoke exhaust systems, remaining open during normal operation, and opens to exhaust 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 period, acting as a smoke barrier

Fire-retardant function. Main materials: carbon steel, galvanized plate, stainless steel. Reliable closure during fire incidents; utilize alcohol lamps or other fire sources to prevent

Fire valve temperature sensor melts; upon the temperature sensor's activation, 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 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 opening tests for reliability, both electric and manual smoke exhaust valves open immediately.