Re: Sprinkler system filled with antifreeze cause house to explode when activated

[nick markowitz <nmarkowitz@xxxxxxxxx>]

On Feb 25, 4:37=A0pm, JoeRaisin <joeraisin2...@xxxxxxxxx> wrote:
> Bill wrote:
> >> Ok now guys, we have to put something in the sprinkler system that
> >> will stop the lines from freezing. What should we use?
>
> > Businesses which have large frozen food areas have air filled fire spri=
nkler
> > systems. A head pops, this releases the air pressure, then that activat=
es a
> > water valve. Water then flows through the pipes.
>
> > And they of course don't want the alarm guy to test the flow switches o=
n
> > these! Then they would need to drain the pipes to get air back in...
>
> Dry systems have an inspector's test valve on the riser that flows water
> past the pressure switch (just as a dump would do) without flooding the
> system. =A0I did it all the time.

Dry systems have there problems as well  drip drums can freeze and
pumps die etc etc.
I have several dry systems I watch and there a pain.