| 摘要 |
<p>Siphonic roof drain for draining rain water under subatmospheric pressure, which siphonic roof drain comprises at least a drain bottom, fit to be connected to a separate drain connector (2) for the further coupling of a drain pipe (7) to a complementary pipe connector (6), characterised in that the drain bottom is provided with passages (17) for connecting means to connect the drain bottom or a part to the drain connector (2).</p> |
