Thanks for creating this demo. I'm designing a ceiling finish that has these concealed heads. Now I know the deflector doesn't drop that low from the finished ceiling so got to keep that into consideration for the depth of the new ceiling finish.

Thanks for the demo, I've always wanted to see how the hidden sprinklers worked.

Great demo and overview - thanks :)

Very cool seeing one in action. Just learned about these in a course I'm taking.

Concealed Fire Sprinklers are better, because objects or debris can’t hit it. Thus, the sprinkler would activate, putting the fire panel into alarm. One particular restaurant I’ve been to had safety cages around the sprinklers. Both options are helpful!

The new building of the school i went to in 2012 had concealed sprinklers in most parts of the schools, the sports hall had another type of sprinkler head The new building of that school was completed in 2012, if I remember correctly (and the old building was torn down, the old building did not have any sort of sprinkler system) Only a small portion of the old building remained (essentially 4 classrooms, and there was also the “portable” classroom which was completely separate from the rest of the school, the “portable” classroom did not even have a fire alarm, the new building did have sounders on the outside of the building, unlike the old building, and due to there being gaps in the room numbers in the new building, i think they had plans to extend the new building, and the design of the building did seem like they designed it with the building being extended in mind, although if the building has been extended between then and now, then there is a chance that one of the staircases may no longer have a door that leads directly to the outside)

FireAlarmeDude. Thanks for putting this together and educating the general public.

very elaborate explanation

More this kind of experiments needed

Cool video and great explanation. Happy Easter.

Great video!

They are isolated too, they dont all go off at once like the movies

whenever I see sprinklers in a building I get anxious but this could let me forget a boot them at least until they need to do their job

Every school I've been to has these, I actually assumed they were sprinklers and I was right

Always wondered how they work...

good one thanks

I have sprinklers in my Apartment, all are concealed except for the one on my patio and one in my laundry closet.

at that short distance from flame, i think its quiet long response, if its in real room means need to be in fully develop fire for it to activated

Wow I’ve never herd of this type of fire sprinkler

I just thought they were a part of the ceiling but I never knew it was a sprinkler.

In case of fire, sprinklers require a person to manually adjust the heads during a large fire.

What would happen if you tape the cap would it not pop?

How hot does it need to be to activate a concealed Fire sprinkler ?

Late response in my opinion. Is it because its outdoors?

I am not a huge fan of these sprinkler, because they take another step to activate. Although, the difference between a concealed and a standard unit might not be significant. Cool demo tho!

1:26

Is this fire protectioin system what they call a " WET SYSTEM " ??

Did anyone notice the slide at 0:09 seconds? Common

inadequate water pressure

Looks to me like your sprinkler doesn’t work lol 😂 fire burned just fine with water lol