what is wrong with this picture

[nick markowitz <nmarkowitz@xxxxxxxxx>]

Well learned something interesting today . the sprinkler system where
I had the major mess and fire signal did not go off but burglar alarm
picked up the ceiling tile being blown out from the water pressure
was caused because a non supervised hand valve was in line to the
pressure switch a valve that never should have been there and should
have been picked up by  sprinkler tech and or building inspector and
eliminated or tampered. It is now tampered.
Just goes to show how valuable all this ICC,NFPA etc certification
classes for inspectors and  installers is.
Wonder how many other dry systems in this community have these non
supervised valves.
I keep saying there needs to be a paddle type flow switch in the water
end of the dry system to pick up water flow the pressure switches are
unreliable.
There also needs to be automatic drain systems on the drum drips as
well.
They have them for compressors.

Its the same old story up north here every winter its not when the dry
system is going to fail and dump its when.

How many dry systems do not even have a low pressure supervisory
switch as well and how many sprinkler systems have now simple $15 low
temp warning stats.

And for all these sprinkler wienies insisting how great residential
sprinklers are
and they will not freeze and cause problems etc. there just dreaming.
If where seeing it with commercial we will see it with residential .
I already have 2 high end homes who put the sprinklers in voluntary
and have shut them off after first freeze up and insurance payment
increase