Fire collar for 90mm duct
These pipe collars are manufactured from a high performance material bonded to the inside of a steel sleeve, which on exposure to heat from a fire will rapidly expand inwards to squeeze the collapsing plastic pipe until the aperture is completely sealed. Pipe collars are tested in accordance with the performance requirements of BS476: Part 20: 1987, Astro E Collar can provide 2 hour fire resistance or the Astro P Collar offers up to 4 hour resistance. Also tested to EN1366-3, NHBC Type Approval. These pipe collars are light and compact, easy to install, maintenance free and find uses in multi- storey office buildings, flat level developments, hospitals and hotels, and anywhere plastic soil and waste pipes pass through fire compartment walls and floors.