Fire dampers

Fire dampers are designed to prevent fire, and to reduce the spread of smoke from one fire compartment to another fire insulation of walls and floors, piercing through the ventilation ducts. Hand operated damper is a fuse which melts and closes the damper spring automatically when the temperature rises during a fire and fuse temperature reaches + 72 ° C. The motor actuator guided closing of the dampers is done by a restoring spring.
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