Abstract: In a tube eversion apparatus a first chamber in which the eversion pressure is developed is controllably sealed by a sphincter-type valve, the valve being in turn actuated by pressure developed in a preferably separately controllable and adjustable second chamber, another chamber preferably being provided above the sphincter-type valve for containing a supply of liquid and limiting turbulence from any escape of fluid past the sphincter-type valve, the other chamber also providing apparatus for supplying heated fluid to a lay-flat hose adapted to be pulled through the spincter-type valve by the tube being everted. Use of the improved apparatus involves appropriate modifications of the usual eversion process involving applying and controlling the everting pressure and the pressure exerted against the sphincter-type valve by the fluid in the second chamber.

Abstract: To facilitate the repair of short sections of pipe by providing a lining in situ, a repair carrier containing the repair lining is moved into position adjacent the pipe length to be lined, the lining is forced out of the carrier into position in the pipe where it is fixed in position and the carrier is then removed from the pipe leaving the lining in place. A flexible tube forming a part of the carrier is used to initially position the lining in the carrier and then to force the lining out from the carrier and urge it against the interior of the pipe, preferably by eversion.

Abstract: A pipeline extending laterally from a main pipeline is inspected from the main line by utilizing an everted hose originally located in the main pipeline to project a TV camera into and along the lateral pipeline.

Abstract: The invention provides a method of applying a resin impregnated lining sleeve to a length of passageway surface wherein the sleeve first of all has a carrier tube everted into the sleeve from one end and out of the other end, the carrier tube is re-inverted to draw the sleeve into the carrier tube and then the assembly of carrier tube and sleeve is positioned in relation to the passageway length to be lined and the carrier tube re-everted to position the sleeve on the surface in the required position. The resin is subsequently cured and the carrier tube removed leaving a hard tubular lining shell on the passageway surface.