| 摘要 |
<p>An apparatus and a method for sealing a conduit. The apparatus includes a housing, a tube for reciprocably extending through the housing bore, a rod reciprocably extending through the tube, a seal assembly associated with the tube and the rod, wherein the seal assembly includes at least one seal element which expands radially in response to an axial setting force, a proximal collar associated with the tube for engaging with a proximal end of the seal assembly, and a distal collar associated with the rod for engaging with a distal end of the seal assembly, wherein moving the rod axially relative to the tube in a proximal direction results in the axial setting force being applied to the seal assembly. The method includes using the apparatus to perform maintenance or repair on the conduit or its associated fittings.</p> |
