| 摘要 |
The present invention relates to a fire-proof drain (1) comprising an expandable material (12) and a drain housing (2), which drain housing (2) is connected to a drain pipe and fixed to a base (20, 22, 24) where a mountable drain trap (4) is installed into the drain housing (2), where the drain trap (4) comprises a cup (6) mounted in connection with the drain trap (4), where the expandable materiel (12, 13) is arranged between the cup (6) and the drain trap (4).
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