| 摘要 |
A fire-stop pipe coupling adaptor (10) comprises a pipe coupling (12) having an intumescent fire stop collar (14) in a metallic band (15) wrapped to form a cylinder (16) thereabout, with the metallic band having outwardly-directed radial tabs (18) at a first cylinder end (19) for attaching the metallic band to a partition (40). The pipe coupling of the adaptor has a male coupling member (46) at a first end thereof for extending into a female end (56) of a cast-in coupling (54) to be attached thereto, thereby allowing an end of the cast-in coupling to be positioned immediately adjacent to the intumescent fire stop collar and the metallic band tabs.
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