Hi Hallerb,

Ah. Yes. When the water was turned back on, there was a lot of sputtering
and shuddering going on, mostly sputtering. I thought it had to do with
the
new burner.
http://www.flickr.com/photos/donnaohl/2276890136/

But, this shaking & flushing of the pipes must have shaken loose sandy
grainy "crud" as every galvanized pipe I replaced was almost clogged
completely with what you called "scale".
http://www.flickr.com/photos/donnaohl/2273250265/

The water *was* brownish for a long while (you can see that in this photo
even after cleaning out the showerheads, so the crud was *still* coming
through the lines even ten minutes after initially turning the water back
on!
http://www.flickr.com/photos/donnaohl/2279233720/

I guess all that brownish was sandy grainy stuff that caught in the
filters
of *all* my faucets, showerheads, and dishwashers!

Nobody warned me about that so I'm *adding* it to the how to that I wrote
up!


The sputtering is due to air in the lines, it gets trapped in all sorts of
places and sputters and spurts out when a tap is opened.

I've only ever seen a couple houses that had galvanized pipes, and in one
case they were all being replaced. The sediment problem is something mostly
specific to galvanized, so it's not on the radar for most people.