| 摘要 |
A fire collar is adapted to inhibit flame propagation through a partition and be supported to the partition and around a pipe extending through a hole in the partition. The fire collar includes a non-combustible sleeve having a pair of opposed, open ends. The fire collar further includes a layer of expandable material carried on the inner circumferential surface of the sleeve. The layer is adapted to be constrained by the sleeve to expand radially inwardly toward the pipe to collapse the pipe in the event the temperature of the material is raised above a predetermined temperature. The layer and the collapsed pipe together form a physical barrier across the sleeve to block the hole. The fire collar further includes a removable, elastic, interference member adapted to be disposed about the outer circumference of the pipe and between the inner circumferential surface of the sleeve and the pipe to create an interference fit therebetween to retain the sleeve relative to the pipe.
|
