Device for sealing a plastic pipe extending through a partition

Details Device for sealing a plastic pipe extending through a partition Device for sealing a plastic pipe extending through a partition

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 5/02 (2006.01) F16L 5/04 (2006.01)

Patent

CA 2082828

2082828 9119127 PCTABS00008 A device for sealing a plastic pipe (22) in the event of a fire preferably has a collar (12) that contains a spring (34) and an intumescent material (26). Spring (34) and intumescent material (26) are arranged in collar (12) in such a manner that, upon closure of the plastic pipe (22) by spring (34), plastic pipe (22) still has a portion (17) of plastic pipe (22) open in communication with the fire or heat source. Open portion (17) permits heat to more readily reach intumescent material (26) to induce its expansion. Spring (34) is protected from the heat source until expansion of intumescent material (26) by an enclosure (30) of fire-resistant, deformable, heat-insulating material.

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