Originally Posted by joaorojas
Catt22, you say that you "will go with copper pipe through the cap". How? How to seal the pipe passage in order to prevent leaks?
BTW, Excelent pics and very good job!
I bore the holes through the cap using a Forstner bit which makes a very clean and precise hole. The pipe fits very snugly in the hole. I used a small amount of silicone to make the seal just as BMB suggested. Also, the inlet and outlet fittings for the cooling water are threaded directly into the PVC pipe wall. The schedule 40 PVC pipe wall is quite thick and will accept threading with a pipe thread tap. No epoxy or glue other than that small amount of silicone sealer was used in this build.
Initially, I had the copper pipes coming through the cap like this:
...but then I stupidly second guessed myself and made the transition through the cap with the CPVC. This was a blunder on my part. It works OK the way I have it, but it was not at all necessary to change it from the original copper penetration.