Device and a method for rehabilitating conduits

摘要

A polyurethane applicator ( 10 ) for spraying at high-pressures a liner on the inner circumferential wall of an existing conduit (C) to be rehabilitated. The applicator ( 10 ) includes a carriage ( 12 ) coaxially guided in the conduit (C) and an atomizer ( 16 ) rotatably mounted to the carriage ( 12 ) for rotation about the central axis thereof. The atomizer ( 16 ) is provided with a nozzle ( 62 ) through which the lining mixture is forced out while the atomizer ( 16 ) rotates and travels in conduit with the carriage ( 12 ).