Quote:
Originally Posted by Daox
It does not have a tacky coating, it just seems smooth to me.
|
Well, the 'tacky' coating is not actually sticky. It's more like if you were to slide your finger nail across the surface, it isn't real slick. By comparison, the non-barrier PEX will feel 'self-lubricated' like nylon bearing material if you ever experienced that.
NP60 Coils - PEX Tubing
I'm challenged as a reader... you can probably read better than I can. If you can't find it, I probably can't either.
Quote:
Originally Posted by Daox
I purchased my 300' at the local Menards for $240. Just today, I found that I can get 300' of 1" PEX with an O2 barrier from pexuniverse.com for about $195. So, I'm inclined to return it and order the PEX online. |
Better, cheaper... no challenge there.
Quote:
Originally Posted by Daox
I was planning on ordering pex crimp fittings from them anyways for connecting the solar panels.
|
I took a solar installer certification course, and they were rather deprecating regarding the use of PEX for solar. They recommended copper. However, at the prices charged for copper vs. PEX, I can understand your choice.
Quote:
Originally Posted by Daox
Talking with a friend at work, he said the iron pumps can last quite a long time, around 15 years. At which point you can get a rebuild kit for roughly half the price of the pump. Once you buy a rebuild kit, you're at the price of a stainless pump (no bronze option). I think I can probably handle a rebuild every 15 years.
|
I bought a used iron pump that had been used in a heat pump DHW application for two years. I opened it up, and it was clear that it wouldn't last another two years.
Beware of dis-similar metals in your system(s)... like copper collectors & iron pumps. Or brass fittings & iron pumps. Galvanic action will win in the long run.
Best of luck to you...
-AC