[TCML] Coil forms, any good?

[Dave Pierson]

>Thick walled PVC is pressure pipe, which means it's
>NSF approved for transporting drinking water. Thin
>walled pvc is drain pipe, which "may" have less QA/QC
>than pressure pipe.
   Random Handwaving.  8)>>
    Thin wall means less electrical losses than thick wall,
    as less material.
    Or so it seems to me.

  Difference likely minor.
    best
     dwp