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Cured in place pipe lining.
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Previously:
Concrete tank lining trolleys - GIF
Lining a pipe - GIF
Relining an old pipe - GIF
Well that looks like and interesting solution. It raises several questions for me
1. Was the branch lined at the same time as the main like? It appears it was, but I am curious HOW that happened.
2. How are they sure the redliner stays centered in the pipe.
It looks to me that both of your questions have the same answer. The orange part has a steerable joint. He lined the main pipe first, cut a hole at the branch, then steered the tool with a shorter piece of lining up through the branch.Quote:
Originally Posted by hemmjo
Neil
How was the hole cut, trimmed and fused so nicely at the branch?
The main lining and the branch looked like it was done all at the same time watch in slow mo speed
It seems that the straight branch was already installed and trimmed flush, and the opening to the wye was already cut. At second three you can see them inserting a liner with the corner of the wye already turned, so when they install it it just goes straight up the wye with no manual guidance required (axial orientation would also be an issue).
And this still doesn't explain how they intend to cut the hole in the wye prior to poking this thing around the corner....
It's probably soft enough to cut for some time after it's inflated. Maybe it fuses to other layers during the curing process.Quote:
Originally Posted by cognitdiss
Neil
Agreed.Quote:
Originally Posted by sossol
While that is nifty for a demo it seems like it would be way more useful if it didn't require manual perforation and trimming in the wye, since 98% of the use cases I would like to use it for will be out of arm's reach...
Also need to note, it is one thing to do with the pipe resting on a stand like that one is. It is a totally different thing with the pipe in place, under ground, under a concrete slab, or buried in a structure.