DAMPERS
EXTERNAL GEAR DRIVEN AIR DAMPER
 
Those dampers are usen in air handling units, air ducts and similiar systems and units, and are operated by means of a plastic gear drive mechanism made os aluminum profile and wings allowing for the air debit to adjusted. The winks are aerodinamic in shape. Thanks to do wing housings on the gear, precise adjustments could be made manually or by using servomotor.
FIRE DAMPER WITH FUSE
Used in air-conditioning and ventilation systems to prevent the fire and smoke from spreading by means of air ducts, Fire Dampers operate automatically. They could either be fitted to air ducts are used in reinforced concrete or brick wall passages. Upon request, ventilation fans could be stopped by adding a warning switch. Thanks to the important fuse flow switch melting at 72(C the wing closes itself not only to prevent the fire from spreading to neighboring locations but also to stop the air circulation so as not to allow it to blow on the fire.
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