On 6/30/2010 4:30 AM, Mark Thorson wrote:
> notbob wrote:
>>
>> I guess the reason why I've eschewed this particular device all these
>> years --there were accomadations for one in my last place and I never
>> even considered installing one-- is that my grandparents always
>> sternly admonished my brother and I to not TOUCH that thingie under
>> the horrible threat of NO DESSERT! or some other heinous retribution.
>
> 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.

These sprayers have valves that have a snapping action to allow for
positive shut-off. Moving a mass of water through a pipe and shutting it
off like that does create shock waves. Your plumbing should have an
extra piece of pipe that's simply filled with air which dampens this
hammering in the pipes. My guess is that most homes have this installed
these days.

I don't much care for the sprayers that have the separate hoses as it
means you're spraying water that could have been sitting in the hose for
a while. The units with the sprayer and faucet are better in this regard
because the water is purged daily but this means your facet is going to
be made of plastic. That's the breaks.

Sometimes I'll shoot water directly from the sprayer into my pan on the
stove - it's a great convenience! :-)