| 摘要 |
<p>The invention relates to a method for providing reconnection to a ferrule (1) of a service line via a bore (2) of the ferrule (1) from within a bore (3) of a lined host pipe (4) adapted to carry a fluid, comprising the steps of locally enlarging a bore (2 or 3) of a member of the ferrule/host pipe system (1, 4), lining the host pipe with a liner (5), locating the ferrule (11) from within the lined host pipe (4), forming a passage for fluid through the liner (5) to the ferrule (1), and forming a seal with the system whereby to obviate leakage of fluid between the liner and host pipe. The host pipe (4) can be a main such as a water, oil or gas main, and the service line can be a branch pipe to carry say water from the host pipe (4) into a building such as a dwelling. A standard-sized local enlargement in the ferrule/host pipe system can be formed. This thus ensures uniformity and where local enlargement of the bore of the ferrule is used, one operation can be used in whatever size of ferrule is inserted in the host pipe. Thus, it is often the case that different sizes of ferrule are used adjacent one another in a length of host pipe.</p> |
