| 摘要 |
Fittings to join and tightly seal tubes such as plastic tubes used in but not limited to various plumbing applications. The fittings allow for rigorous and non-destructive tests of the integrity of seals, where the integrity of seals can be readily and quickly tested one by one, as a pipe system is being built. The seals can also be tested again, after installation and completion of the plumbing arrangement. The fitting comprises two pairs of sealing zones, each pair having in between sealing zones a pressure testing chamber with an inlet, which allows for pressurising the chamber and testing the integrity of the adjacent seals. The fittings have a series of cold zones that enhance flexibility and integrity of the fittings. |
