On Apr 19, 10:24*pm, wrote:
On Mon, 19 Apr 2010 18:30:23 -0700, "Steve B"

wrote:
Painting black reduces the absorption of UVA, B, and C so that the pipe
lasts a little longer.

I live in South Florida where water doesn't freeze. There are folks
around here with well pipes, water softeners pressure tanks etc, that
have been in the sun for 30 years without breaking so I do think the
UV thing may be overstated a bit.
Sure if you back over one with your car it will break but it isn't
just going to spontaneously shatter.

I took out some PVC pipe that had been exposed to the sun for about 7
years. It was still doing its job but it was brittle as heck.

Jimmie