| 摘要 |
A plug for sealing a conduit comprises a body having a first section (15) and a second section (17), and at least one seal element (20) for creating a seal between the plug and the conduit. The at least one seal element (20) is adapted to be energised by movement in a setting direction of the first body section (15) relative to the second body section (17). The plug further comprises seal locking means (26) comprising a first portion and a second portion wherein as the at least one seal (26) is energised, the seal locking means first portion is rotatable unidirectionally relative to the seal locking means second portion to take up the movement of the first body section (15) relative to the second body section (17) in the setting direction and prevent movement of the first body section relative to the second body section in a releasing direction, opposite the setting direction. In one embodiment the seal locking means first portion is a locking nut. |
