fire-damper
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fire damper
Standards
a complete assembly complying with
AS 1682.1
Source - AS 4254.2-2012: Ductwork for air-handling systems in buildings
Standards
a device that operates to restrict the passage of fire or products of combustion through a duct or opening for the passage of air
During recent years, fire collars have been used to protect openings in riser shafts where ventilation ducts penetrate the fire-resistant shaft wall, in lieu of mechanical or intumescent fire dampers. Typically, the ducts are PVC pipes not greater than 200 mm in diameter and are used as bathroom exhaust, laundry exhaust, fume cabinet exhaust or outdoor air supply. Such arrangements are not acceptable under this Standard.
Source - AS 1668.1:2015: The use of ventilation and air conditioning in buildings
HB50
especially constructed shutter to automatically close off a duct or other airway passing through a fire separation to prevent the passage of fire, hot air, or products of combustion
Fire dampers usually have a concertina-type sprung blade that is activated by a heat-released or fusible link.
HB50
fire damper