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A few years ago I heard of a device that will clean out old iron pipes and coat the inside with a Teflon type of substance. I am now in need, but can not remember the name of the tool or procedure. Does anyone know the name of the device/procedure?
This pipe re-liner is used for primarly sewer lines 4" or larger.
Also, check out this articale in Plumbing & Mechanical magazine http://www.pmmag.com/Articles/Cover_Story/5c46f6d1030d7010VgnVCM100000f932a8c0____
Perma-Liner and MaxLiner are both methods used.