Abesco Intumescent Dampers are designed to prevent the passage of flame and smoke through or into air movement ventilation ductwork or through air transfer apertures in walls, timber and steel fire doors.
Abesco Intumescent Dampers are manufactured from galvanised channel and comprise horizontal metal blades lined with a heat reactive intumescent material. Abesco Intumescent Dampers are available for circular, rectangular and square ducts and apertures.
WHY USE ABESCO INTUMESCENT DAMPERS?
Comprehensively tested by independent fire test authorities in accordance BS476 part 20:1987 and AS 1530 part 4:1990 & 4072 part 1:1992 for over 4 hours fire resistance
Meets the requirements of BS5588-9, Sec 6.3 & 6.8
Rapid closure in fire conditions
Will provide fire protection for over 4 hours
Unaffected by moisture or high humidity
Non toxic inert materials used throughout
Low Maintenance – No mechanical components to maintain
WHERE TO USE ABESCO INTUMESCENT DAMPERS?
Abesco Intumescent Dampers should be used to prevent the spread of flame and smoke from the room of fire origin to other compartments and escape routes through ventilation ductwork as outlined in method 1 of BS5588-9.
Abesco Intumescent Dampers can also be installed in timber or steel fire doors, fire compartment walls or partitions where such apertures form part of an air distribution system. Dampers installed in such a way should be fitted with a non-vision louvre cover plate, which are also available from Abesco.
WHAT HAPPENS IN A FIRE SITUATION ?
In a fire situation, the intumescent material will expand within the damper fully closing the duct or air transfer aperture to the passage of flame and hot smoke to adjacent voids and compartments.
HOW TO SPECIFY ABESCO INTUMESCENT DAMPERS
“Supply & install Abesco Intumescent Dampers within ventilation ductwork / air transfer openings in accordance with BS5588-9, sec 6.2.2 or 6.8.2 (b) to provide (—) minutes fire protection in accordance with manufacturers recommendations”.
Supplied by: Abesco Ltd, Abesco House, Laurencekirk Business Park, Laurencekirk, AB30 1EY, UK.
Abesco can undertake fire safety risk assessments in compliance with fire safety legislation and provide installation of passive fire protection materials.
In addition, project specific fire testing can be arranged for particular site configurations.
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