How a fire sprinkler works

[@koriwuzheer]

Channels like yours fill the hole in our hearts that Discovery Channel, TLC, and History Channel used to fill before they went all in on reality TV.

[@wolphin732]

Most creators have gone onto Curiosity Stream... but that costs money. There is a distinct lack of documentaries on here these days :(

[@TrogdorElite6]

So true.

[@canon5d2x2010]

There is a kind of sprinkler system that activates all the sprinklers when only one is triggered. It consists of a dry pipe fitted with nozzles and a wet pipe with normal sprinklers. When a sprinkler in the wet pipe system activates and loses pressure, the dry pipe gets charged with water or foam from a pump, which flows out of the nozzles. This system is mandatory in garages in Taiwan, making it very common here.

[@FOHGeek]

The type of system you described is a deluge system, which is widely used not only in garages but also on theater stages and at hazmat storehouses. They not only respond quickly to fires but also prevent the combustion from spreading out.

[@NipkowDisk]

Movies create the impression that every sprinkler system is a deluge one, i.e., if one goes off they all do. Thank you for showing Henry Parmelee's original sprinkler design and explaining it- this is the first time I've ever seen such.

[@lorddrago2854]

The amount of effort required for these videos is amazing

[@repatch43]

The only thing you failed to mention is that instead of nice clean water, what you get when a sprinkler is activated is the most foul smelling liquid you’ve even experienced spraying everywhere. The water has often been sitting up there since the buildings construction, and all the time turns it into something I pray no one ever experiences. I can still smell it.

[@sbomorse]

I LOVE your videos! I love learning how things work.

[@TonyArnouts]

If all sprinkles go at the same time, it's most likely a deluge system. It's triggered by a secondary (dry or wet) sprinkler system. The dry deluge pipe has open heads, the trigger system closed heads. When fire triggers a closed head, the air or water pressure drop opens the deluge valve, allowing water discharge thru all heads of that primary system.

[@mcb187]

Water deluge systems do exist, basically if any heat is detected anywhere then the entire system is activated, such as in high hazard areas where there are lots of combustibles. And the clip shown from the equalizer is a place where a water deluge system could be used, funny enough. A hardware store has tones of chemicals and combustibles! Although I have no idea if hardware stores usually use them, this might be one of the rare movies where this trope could actually makes sense.

[@Tidexon]

These videos are incredibly well made and easy to understand

[@benjaminrussellchen]

I never thought to question how fire sprinklers are triggered all together in movies! Awesome animations!

[@clockworkvanhellsing372]

I've head that there are nice systems, that increase the preassure in the pipes high enouth to break the glas tubes in the other sprinklers, but those are really seldomly used.

[@maxkrabel2320]

And in like high risk places you can trigger them manually 😊

[@rmnkvlnk]

Thanks for the video, it is really interesting. Also I liked how with time sprinkler system has become as simple as possible compared to initial design.

[@maxrburgess]

6:19 some fire sprinklers do go off all at once with the triggering of a smoke alarm (these are similar to dry pipe but are missing the bulb) I understand they're common on car carrying boats. [Another commenter pointed out they're called a deluge system] Deviant Ollam has a really great talk about fire code including in-depth explanations of *all* the sprinklers.

[@conrat2000]

Awesome video. Really nicely done. And the Hollywood explanation at the end was golden. Thank you.

[@deletdis6173]

Heck yes, love your channel.

[@Nicsnapsalot]

KZbin channels like these are why I love youtube

[@wolphin732]

Ummm... there is a 3rd type of system, which does trigger all the heads at once. This one doesn't have valves at each head, but instead is controlled by a valve or valves and is triggered manually by an activation panel or by a fire alarm system. It usually exists in manufacturing plants or places where dust or materials can get to a concentration and cause a dust explosion, and where if there is an issue in one place you do want the whole area wet down, not just the specific small area where there is a fire. It is not used in an office area, as that sort of area, the cost for remediation is too high to have them all trigger (replacing all the papers, furniture, computers, etc)

[@crazykittenvideos855]

I love this channel and the graphics and animations are incredible ❤

[@JuanGuzman-c2g]

Amazing video, love that you're adding the historical aspect as well!

[@ImDumb-y6f]

Such an amazing job guys. Keep it up.

[@pinkzombie]

Movie myth: pulling fire alarm does not make springer release any water.

[@만타킴]

This is amaaaaaaazing video. I appreciate it. It help me a lot.

[@LorenzoSalvetti]

Thanks from Italy!

[@dranoelhs]

Best youtube channel

[@19940524]

Awsome! Definitely learned something new! 😉

[@briankimotho5622]

Thank you too for the enlightenment

[@rockcrawler3119]

Great info!

[@tirthvora5061]

Great job!❤❤

[@EvgenyAlterman]

Thank you!

[@visualchallenge2413]

Informative video. Thanks !

[@actomobile]

6:45 that's from Constantine. My first thought when you mention movie misconceptions

[@madhousenetwork]

The Matrix (1999) too

[@mouchoirs_blancs3582]

Great video

[@mklopfer]

Great job, keep up the awesome work!

[@JohnJohn-dc7id]

Informative video

[@hibou-cool2]

very nice

[@krobjenk]

Good job!!

[@Liriq]

I happened to know all this, but your great explanation and animation got you a sub

[@NilsRohwer]

Great video ❤

[@Ciscopy]

this comment so that the algorithm helps this educational video instead of a drama one.

[@yousefedris3701]

Love you guys ♥♥

[@andonel]

You guys are great!

[@dirtbiketrailrides]

Good work on the fire sprinkler modelling! Learned a lot here, awesome stuff. I like the comparison of first patent invention vs modern. It really minimized parts complexity.

[@Steve.191]

Nice 👍

[@ashitude]

I always laugh at those movies. And when a sprinkler goes off in the movies it's the pressure of a garden hose 😂

[@Kato0909]

Also, sprinklers must always be situated at the very top of the room, at a very close distance to the ceiling. That's because hot air from fire quickly rises, and stays at the very top part of the building volume, if the sprinkler is not there, it couldn't activate at needed time.

[@teexteur]

Nice

[@triforcewielder8500]

You have to make a video showing dry fire sprinkler suppression systems...

[@luppano]

Great !

[@fhdhff]

cool video!

[@valgeirborgarsson2979]

Wanna keep seeing these videos

[@empmachine]

To fix the flickering: I think you can try to use a super big plane as the light source (assuming you haven't tried mucking with the denoising settings).

[@GimmilFactory]

You're actually incorrect and tv shows are accurate that when one goes off, all go off. Some systems are designed to over pressure the liquid lines in order to burst all other ampules if the system notices a significant drop in pressure from one bursting.

[@tusu_27]

nice

[@marf1515]

You forget about deluge system, with one pressurized air pipe and one dry pipe. The pressurized air pipe has the glasses and keeps air pressure up to keep a watervalve closed at the dry pipe. When one goes off al go off :). ( Used a lot in chemical factorys)

[@alexander-kirk]

How about a follow-up on why different sprinkler heads have different temperature triggers?

[@randycarter2001]

The Hollywood misconception is that when one goes off they all go off. Only the ones exposed to the heat go off. Often only one is activated.

[@Dawid-ud1qh]

just a comment for the algorithm

[@tomarmadiyer2698]

I'll see that and raise you another

[@hawkingdawking4572]

Good.

[@bjetTube]

Very well done

[@vuza752]

Great comment

[@Doziano12]

No, Wait…

[@patrickstar236]

Yes

[@shawnbait]

Adding to comment chain for algorithm.

[@tristankordek]

😊👍

[@niallobrien-moran6596]

In high school, a class mate was practicing some basketball moves in the hallway. At some point they threw the ball hard enough to hit the ceiling, well it struck a sprinkler and broke the glass. Sure enough there’s absolutely no more sports happening in the halls outside the gyms.

[@JustThatGuy95]

W content

[@MyChannel-pd5re]

My residential sprinkler heads have 4 slotted vents holes that allow air from the attic to enter the home. I have an exhaust vent that runs 24/7 and dust from the attic comes in. Are the vent holes needed?

[@SMB_Nut]

used in parking garages: how tf is 100000 ton concrete parking garage coing to catch fire. non the less incredible video 10/10

[@chrisregister8021]

The misconception is that when you pull the fire alarm, it activates the sprinklers...

[@maxrburgess]

Oh god yes it's this exactly. I said something fairly close but this one annoys me a lot more than actual fire setting off all of them.

[@mewmew32]

every movie I've seen where someone deliberately sets off sprinklers it's by holding a flame to the sprinkler head...

[@chrisregister8021]

@mewmew32 wow you haven't seen very many movies have you...

[@Toni-e8k]

There is another system I have seen on a boat where the pipes are filled with low pressure water but as soon as 1 sprinkler pops a high pressure pump activates the rest of them

[@powerpc6037]

I also don't get why, in a movie, they always search for a lighter to set off the sprinkler system when they're already holding something else that can easily break that glass bulb by simply smashing it, like a hammer or crowbar.

[@WDCallahan]

I think you meant pendant. Not pendent.

[@Deconstructed_Animations]

Thank you for pointing that out! The correct term is actually “pendent” in the context of fire sprinkler heads.

[@WDCallahan]

@@Deconstructed_Animations Really? I wonder how that came about?

[@cartoonkeeper]

​@@Deconstructed_Animations also the thing that you forgot to mention about the wet pipe sprinkler systems is that because the water often just sits in the pipes for long periods of time until the sprinkler heads are triggered often the water that comes out initially is brown and gross from corrosion in the pipes

[@stabilini]

Although there are deluge systems, these are not always convenient as water will last fewer than traditional systems

[@Jonas-Seiler]

the best things arise from people trying to solve real problems they actually have, but unfortunately that’s not profitable anymore

[@TheWazsan]

Another thing you see in films is that as the fire has been extinguished the water turns off usually quite fast thereafter. This can only happen if someone turned it off manually and usually there is no one there to do so.. The main character has killed all the baddies, and the fire department or the janitor are no where to be seen

[@Ballduck-6a11duck]

They activate immediately after a fire

[@TweeterOP]

For the algorithm

[@MapedMod]

Great informative video but please normalize your audio. It is all over and I had to constantly watch over my volume.

[@aeDoesThings]

Had no issues here, maybe your speakers are broken?

[@MapedMod]

@@aeDoesThings I use audio technica m50x and never had problems with them also it would be weird if I had problems in only one video wouldn't it? Check out the bass difference between the beginning of this video and 2:50

[@JohhnooTheBeast]

Algorithm comment 🙌🏻

[@St0RM33]

the raytracing noise is hurting my eyes!!

[@ponponpatapon9670]

i don't use this 🤓 lightly, but you are a SUPREME nerd if such a minor thing is "hurting your eyes" bro

[@AJ-Palermo]

​@@ponponpatapon9670 how does that make them a nerd? Some people are more sensitive to flickering than others

[@cm5754]

Completely eliminating the air bubble? Unless the bubble dissolves in the liquid, the bubble should just get smaller as the pressure increases

[@fyrenwater]

And here I was, smug that I knew the answer to the Hollywood sprinkler myth. I stand corrected!

[@Skopji]

I am probably way off base here. But I'm curious if dry systems are more prone to activating multiple sprinklers when only one sprinkler is tripped. I wonder if the transition from gas to liquid on an old system might cause some plugs to fail. Maybe even wet systems are prone to a similar failure point. So maybe that's where that 'hollywood' sprinkler scene comes from.

[@ExecutorQ3]

Not 100% true. In the past company i'm working in (audio video stuff) were making and installation in a gasholder (that's been rebuild to hold huge hall with pa system and projektors and couple of smaller more private halls like that). And i remember one day we arrived at the area and we our contact tech sitting near huge lift shaft that looked like waterfall. Turns out there were firemans inside testing a system and one wanted to see a sprinkler work. But after they activated one whole section bursted open, flooding (and ruining) eooden floor in multiple halls, along with two of you large sized projection screens. So either smth like watter hammer made them rupture as well or there's a system when if one activated and pressure drop is noticed on the system huge pumps will increase it that much that all other sprinkler tubes are bursted by the prrssure increase (The gas holder have huge water tanks with 2 big pumps - i've seen then once, like a bottomless pit sutrounded by concrete and nothing else)

[@usopenplayer]

These videos need to go into the Ark. We need keep them safe in case we ever need to rapidly tech back up.

[@landonbeyette2361]

Algorithm

[@ddddddddd574]

It's pronounced "water" not "warder".

[@Nebby_Webby]

Who asked? Who cares?

[@tectzas]

Comment

[@stevenchan3822]

My 3 yr old thinks fire comes out the sprinkler

[@Myau91]

I guess, the mistake is that you can trigger it just by smoking a cigarette in the room

[@clstuder]

Hyperintersing

[@eneadelehum1637]

Great video

[@WesleyGeneroso]

Great video!