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

["petem" <petem001@xxxxxxxxx>]

"JoeRaisin" <joeraisin2001@xxxxxxxxx> a écrit dans le message de groupe de
discussion : hm6qiq$qaf$1@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> 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
>> sprinkler systems. A head pops, this releases the air pressure, then that
>> activates a water valve. Water then flows through the pipes.
>>
>> And they of course don't want the alarm guy to test the flow switches on
>> 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.  I did it all the time.

There is an hybrid system where there is a pipe full of air under pressur
that have heads like regular sprinkler head, but its not connected to any
wather supply.

when one head is poped cause of over heat, a valve is release on an other
pipe network that has open head and all over the place and water is pourred
every where...

we call that a deluge systeme here, and you dont want to trig those by error
;-)