I have an existing drain pipe that takes water from our roof catchment, and sends it down into our drinking water tank (this is our household water supply). We now have a new building, and I wish to route the extra rain water from this roof into the same pipe. So I want to add a T-junction to this existing pipe, and route the new roof pipe into it.
I have repaired broken in-ground agricultural pipe sections before, but had (too much) trouble trying to insert joiners as there is no "give" in the buried pipe. Eventually I used rubber-sleeve type joins, but am unsure of using these with drinking water.
So, short of digging up 20 metres of pipe to get some extra bend/movement, with an existing 100mm UPVC "poly" pipe in the ground, is there technique for adding a new T-intersection?
Not relevant: Add T fitting to pipe