BE-13 Renovation: Lining with Cured-In-Place Pipes - Processes - v01

Installation Variants of the Lining Tube

Installation Variants of the Lining Tube

The quality of the installation decides which material and geometric properties the CIPP liner ultimately have, as the risk of quality losses during installation on the construction site is usually very high. Basically, the following installation variants are distinguished.

Inverted-in-place insertion (almost exclusively needle felt liner)

The impregnated lining tube is introduced by inversion, which is the process of turning a flexible tube inside out by the use of fluid (water or air) pressure. This pressure inflates / expands the lining tube at the same time, so that it is pressed against the host pipe wall.

Winched-in-place insertion (needle felt liner, mainly glass fibre liner)

The flat impregnated lining tube is first pulled into the pipe to be lined and then inflated by applying water or air pressure so that the lining tube is pressed against the host pipe wall.

Combination procedure

A flat impregnated lining tube is first pulled into the pipe to be lined and then expanded by a second lining tube (calibration lining tube), which is introduced into the first tube by inversion applying water or air pressure. This inversion process inflates / expands both lining tubes, so that they are pressed against the host pipe wall.

 

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