In concrete pits, it is not uncommon to have a core drilled hole with a plumbing connection that is inaccessible. For a tank liner, this means that our standard way of handling outlets cannot be accommodated. No problem though, there are ways to handle these holes.
Witt flexible PVC tank liners can be built to handle accoutrements like outlets, sumps, manways, etc. The questions often asked is, “should they be built into the liner or made separate and field installed?” The answer is both – depending upon a number of factors.