In-flow drain pipe test and repair tool

摘要

The tool consists of an oval tube (7), with an outer radius slightly smaller than that of the drainpipe (8), containing rubber bellows (3) inflatable from below using compressed air. This tube can be turned by a motor through 360 degrees and contains a inflatable bladder (5) coiled round a motor-driven reel (10). A diaphragm (11) across the tube wall allows passage of the bladder under pressure. The tool is inserted into the drain pipe and inflated to test for leakages. The connection between main channel and inlet pipe is tested with compressed air and the same tool can be used to squeeze filler into cracks and holes.