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A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to maintain the fireproofing of a wall or floor assembly allowing it to impede the spread of fire and smoke.
Constructional thermomanagement for cable sleeves and boxes preformed to be installed in a firewall
The invention relates to a metallic housing (5) for a firestop through penetration device (4) The housing (5) is preformed to be installed in a break-through (3) of a firewall (2) to form a side wall of an axial channel and configured to receive penetrants (10); and has one or more of the following constructional features reducing thermal conduction between its opposite openings (6, 7): - a radial thickness of less than 2 mm; and / or - stainless steel, chrome steel, and / or other steel alloys with chrome, nickel, molybdenum, titanium, and / or tungsten used as its material(s); and / or - a corrugated longitudinal profile, increasing the length of heat conduction paths connecting the opposite openings (6, 7); and / or - a plurality of slots (17, 17a, 17b) extending at least partly in a circumferential direction and being successively arranged in the axial direction with offsets, increasing the length of heat conduction paths connecting the opposite openings (6, 7).
Owner:HILTI AG