Mark Thorson > wrote:

>My mom didn't use the one on her sink because it
>would cause the water to turn rusty. There was
>a sort of hydraulic ram effect which would knock
>loose rust from the inside of the pipes.

In this situation you may want to snake those pipes that are
snakeable, and knock out as much remaining rust/grit/etc.
as possible by turning the house water supply valve off and
on several times.

We were experiencing low water flow in the kitchen, but
after a plumber did some snaking it was back up to normal.

Then, after some foundation work that involved lots of hammering,
more stuff was knocked loose clogging up some faucets. By
removing the taps and pulsing the house water (these were
washerless faucets), the debris shot out into the air, getting
rid of the clogs.

Do not get sold on the idea that you need entirely new pipes
just because of flow and/or debris problems, the old pipes can
usually be cleaned up.

Steve