On Sat, 10 Jan 2015 01:58:56 -0500,
gfre...@aol.com wrote:
>>You should also remove the aerators on your faucets and clean them, and
>>also drain your water heater to flush out the dirt, as well as flush out
>>any ice maker lines if you have one, and toss any old ice cubes.
>>
>
>There should be a back flow preventer to keep your water from getting
>back into the system. It is usually just a globe valve buried near the
>connection to the street.
I know all houses have a buried shutoff valve, which needs a long
special tool to shut off, via a capped tube over the valve.
But a globe valve is not a back flow preventer. However, there SHOULD
be something to prevent back flow, but I have seen water lines installed
and never seen anything other than the connecter on the main, the valve
in the lawn, and the entrance of that pipe into the house, which goes
right to the meter. Of course this could depend on local codes and
requirements......
>
>The only I can think of is maybe the air going through could spin up
>the paddle wheel on the meter faster than water would but I still
>would be surprised if it was a very big number.
>I have a water meter in the garage. If I get a minute I will see what
>blowing compressed air through it does.
I'd be interested to find out the results of this experiment!