How a Fire Sprinkler Works at 100,000fps - The Slow Mo Guys

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The Slow Mo Guys


Gav and Dan like learning and like fast things. In this episode, they learn about a fast thing.
A fire sprinkler that you can probably see above your head if you are watching this from your office when you should be working. Shame on you! Nah, just kidding. Watch more Slow Mo Guys at work!
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Filmed at 1000fps with the Phantom Flex 4K and 103,000fps with the Phantom V2511
How a Fire Sprinkler Works at 100,000fps - The Slow Mo Guys

The Slow Mo Guys
The Slow Mo Guys वर्षांपूर्वी
In the replies to this comment i'll be taking names for the possum.
fabledshroom महिन्यापूर्वी
Boss Coins
Boss Coins 3 महिन्यांपूर्वी
@Noxius ues
arozthebeast 4 महिन्यांपूर्वी
DoctorX17 4 महिन्यांपूर्वी
Will Bridge
Will Bridge 5 महिन्यांपूर्वी
didcot county council
DarkVitamins दिवसापूर्वी
0:35 Minor nitpick: Heat doesn't rise per say, hot air does.
Will Da
Will Da 6 दिवसांपूर्वी
"ampoule" literally means lightbulb in french 7:00 **laughs in frog baguette* no it's not xDD
Iam Ben by the way
Iam Ben by the way 13 दिवसांपूर्वी
That one exploded fast but in other videos tooked minutes... 🥴🔥
Rick Vaughn Diaz
Rick Vaughn Diaz 16 दिवसांपूर्वी
Will a droplets of Water wash out a Fire 🤣
Anti GrieferGames
Anti GrieferGames 19 दिवसांपूर्वी
I from Germany and i musst watch the Vidio For homescooling ...
Simon Olson
Simon Olson 22 दिवसांपूर्वी
Cool video
Simon Olson
Simon Olson 22 दिवसांपूर्वी
I saw one of these go off in person but I wasn’t unlucky because I want to travelers insurance for a testing site
insectbah 25 दिवसांपूर्वी
One of my favorite videos because 1) learning 2) Dan making a noise every time is hilarious 3) POSSUM
WAL ter
WAL ter 27 दिवसांपूर्वी
aren't we gonna talk about how perfectly alinged his screams are with the water at 1:19
Andrew Church
Andrew Church 27 दिवसांपूर्वी
Who would win? 1. A deadly hot chemical reaction that can bring down a building in less than a day 2. One sprinkly boi
Players Central
Players Central महिन्यापूर्वी
Can the broken glass hurt you
Olivia Lashay
Olivia Lashay महिन्यापूर्वी
Love y’all non Americans lol
Ozil Gzbsj
Ozil Gzbsj महिन्यापूर्वी
The inexpensive refund feraly ask because crack cephalometrically cheat unlike a sleepy mask. automatic, dashing schedule
gogetthegoose1 महिन्यापूर्वी
"American things"? .... unamusing!
Zxilks YT
Zxilks YT महिन्यापूर्वी
I knew how sprinklers worked before this but I just wanted to watch it in slowmo
Everything Jeepster
Everything Jeepster महिन्यापूर्वी
They’re called freedom units.
Alan Johnstone
Alan Johnstone महिन्यापूर्वी
the real deal has a lot more water pressure in the system. I know from my own experience in property management.
Phil Nolan
Phil Nolan 2 महिन्यांपूर्वी
Time to call BS on every movie and tv program that shows all the sprinklers going off at once.
Jan Jančík
Jan Jančík 2 महिन्यांपूर्वी
I liked how he flexed with his FLEX 4K. Flexing is *tight* !
happydoggs 2 महिन्यांपूर्वी
Would be cool to see one burst at the actual 200psi most fire systems are charged too.
FectacularSpail 2 महिन्यांपूर्वी
Who the heck are these 2.6k people who don't like this? Do they have something against possums?
Shadman Shahriar
Shadman Shahriar 2 महिन्यांपूर्वी
Disappointed. Fire sprinkler doesn't sprinkle fire.
Pc Prosx100
Pc Prosx100 2 महिन्यांपूर्वी
Also it’s not glycerin it’s mercury
Hans Johnson
Hans Johnson 2 महिन्यांपूर्वी
So the way that these are normally deployed , the pipes are dry and pressurized with air at around 45 psi (3 bar). This air pressure is holding a valve closed that is holding back water at about 120psi (8 or 9 bar). The ampule breaks, releases the air out. At around 20psi, the flapper valve flies open, and the system fills with water at street pressure. They spray a lot further when they go off.
Filipi E.S
Filipi E.S 2 महिन्यांपूर्वी
0:55 "155 American...things.'' almost spat out the food I was chewing lmao
Zeta Alpha
Zeta Alpha 2 महिन्यांपूर्वी
We all say Fahrenheit but we all mean ‘american’
Hotelogence Gaming
Hotelogence Gaming 2 महिन्यांपूर्वी
Gav. Possums aren’t cute. Reguards, Ian.
Hayden 2 महिन्यांपूर्वी
I thought I’d see a high-pressure one
A Random Youtuber
A Random Youtuber 2 महिन्यांपूर्वी
Noob: it water garden! Pro: no it’s to put out fire. Noob: no it water garden! Pro and me: no! Now SHUT UP NOOB!
Egemen Artuk
Egemen Artuk 2 महिन्यांपूर्वी
4:19 is what you came for. You are welcome
pixeley87 2 महिन्यांपूर्वी
Elenesski 3 महिन्यांपूर्वी
HAHAHAHA ... you made my day with the line "155 american things" :)
Roofluffer 3 महिन्यांपूर्वी
needs more water pressure i think
stiffcookie 3 महिन्यांपूर्वी
Slow Mo Guys: "A fire sprinkler that you can probably see above your head if you are watching this from your office" Everyone: Looks up
Domingo Coralee
Domingo Coralee 3 महिन्यांपूर्वी
The unusual crayon electrophoretically empty because okra morphometrically contain onto a shallow mimosa. ancient, common unshielded
Slice of Sparta
Slice of Sparta 3 महिन्यांपूर्वी
Hello! Engineer for a company that makes sprinkley bois here! I loved the graphic that popped up at 0:52 about the colors and temperatures. The "glassy, juicy ampules" (lol Dan) are called bulbs, and like the graphic shows, the color indicates the burst temperature. Several factors determine what temp bulbs you want to install, the main one being height. For example, the sprinklers at the top of a warehouse need to burst at a lower temp because of how far away the fire is, compared with a standard residential or office ceiling height. Sprinklers can also activate via "links", which are basically little plate springs that are held at tension by solder paste. The fire melts the solder, the spring explodes outward, water comes out. The explosive quality of the bulb or link is important, because you have to get everything out of the way of the water flow. Some sprinklers, known as nozzles, don't have anything holding the water back! More on that in a minute! One last thing: if you're in a building with a flat ceiling and don't see any sprinklers, look for round discs instead. These are known as coverplates, and they provide an aesthetically pleasing way to cover a sprinkler from view! They can be color-matched to any ceiling, and like links, contain a solder paste that makes them pop off and expose the sprinkler at a much lower temperature than would actually trigger the sprinklers. Couple of myths: first one was one I used to think before working here is that the round bit on the sprinkler spins around as it goes off. Sadly not true for any sprinkler! That bit is called the deflector, and it's specifically designed to spread water in a certain pattern. Deflectors vary based on many factors, but primarily where the sprinkler is installed and the orientation in which it's installed. Many hotels use sidewall sprinklers with very different deflectors than the one in this video. Another big one: sprinklers always have water immediately behind them in their pipes, like Gav and Dan's in this video. Also not true! SOME systems are like that, and those are basic wet deluge systems. The problem with them is that it's relatively easy to have an accidental activation, which is the SECOND worst thing a sprinkler can do, because water from sprinklers can cause lots of damage, but not nearly as much as a fire. The worst thing is obviously if there IS a fire and the sprinkler doesn't activate. All sprinkler companies go through GREAT measures to make sure neither of these things ever happen! Back to water in the pipes: systems that do NOT constantly have water behind the sprinklers are known as dry systems, and they rely on a trigger mechanism to open the VALVE on the water main that holds back water to the system. The trigger is typically one of three things: an electronic signal from a fire/smoke detector, a wet pilot line, or a dry pilot line. Pilot lines are located with the sprinklers in the protection area, and are pressurized with either water or air (wet and dry). When the fire trips the pilot line, the pressure on the line goes away, which trips the valve to open and converts the dry system into a wet system, but only nozzle sprinklers go off at this point. Most wait until the bulb or link sprinklers trip. Obviously the pilot lines trigger at a lower temp than the sprinklers; that way the sprinklers always have water behind them when they trip. Some valves have multiple of these fail-safes, to further ensure against accidental activation! Any questions? I promise I can either answer you myself, or get a nice, smart coworker to help me out! Hope everyone is having a great day! 😊
Rachael Stickle
Rachael Stickle 3 महिन्यांपूर्वी
sprinkly boys lol
Casey Locke
Casey Locke 3 महिन्यांपूर्वी
Stay away from the possum. That's a nocturnal animal out in the daylight. Something's not right.
Tom Hensley
Tom Hensley 3 महिन्यांपूर्वी
I beg yous pardon, it anit right talking bout us mercians. Got got it citrus fruit. Lol
KimShea22 3 महिन्यांपूर्वी
Lol, got a Koorsen ad right before this video
AfroAsia Adventure
AfroAsia Adventure 3 महिन्यांपूर्वी
155 American things 😂😂😂😂😂😂😂😂😂😂😂😂😂😂
avinotion 3 महिन्यांपूर्वी
7:14 The last one was my favorite
Chris Vecchio
Chris Vecchio 3 महिन्यांपूर्वी
That's nothing compared to a real sprinkler head going off on a real system. I'm a sprinkler fitter. I've seen it
waffl3_ir0n 3 महिन्यांपूर्वी
1 like = 1 pet for possum
AnglingNVirginia 3 महिन्यांपूर्वी
Really cool, except for him acting like a 5 Y/O little girl about some water..
MaxMeh 3 महिन्यांपूर्वी
Excellent Sir David Attenborough impression.
yousef diaa
yousef diaa 3 महिन्यांपूर्वी
Joshua Bennett
Joshua Bennett 4 महिन्यांपूर्वी
One actually installed in a building has much more pressure and has a pump connected to it of pressure isn't high enough they actually cover much much much more then what it shows in the video
Joshua Bennett
Joshua Bennett 4 महिन्यांपूर्वी
The most common system is a wet system where the pipes are full of water but there is also dry systems where the pipes are full of air untill the heads go off then they fill with water
Joshua Bennett
Joshua Bennett 4 महिन्यांपूर्वी
There's also several different types of sprinkler heads and systems this head is called a pendant because it's upside down and ones that are upright are called upright heads
John Rosenthal
John Rosenthal 4 महिन्यांपूर्वी
The mindless intestine histochemically guide because song remarkably park near a lonely macaroni. nine, flashy millisecond
D 4 महिन्यांपूर्वी
The flex 4K is $100,000. I guess he’s really “flexing” on us.
Nova Prime
Nova Prime 4 महिन्यांपूर्वी
Celsius? I'm American i measure temperature in apple pies, 10 meters? You mean 15 dog tails.
Look See
Look See 4 महिन्यांपूर्वी
Video starts at the 5 min mark
Aram Zero
Aram Zero 4 महिन्यांपूर्वी
That glass could potentially hurt whoever is under that thing tho. Even just if it goes in the eyes!
Eween Mj
Eween Mj 4 महिन्यांपूर्वी
These shots are making me thirsty
Nathaniel Walker
Nathaniel Walker 4 महिन्यांपूर्वी
Imagine in 15 years when we can get this kind of slow motion on a phone.
Eric P
Eric P 4 महिन्यांपूर्वी
"155 aMeRiCaN tHiNgS" Wow 😑
TheCrafter1952 Official
TheCrafter1952 Official 4 महिन्यांपूर्वी
"One hundred... Fifty-Five... 'American Things'." Technically the truth!
maddoxXL101 4 महिन्यांपूर्वी
As someone who used to test these kinda sprinklers you obversions are very accurate as to how the over head sprinkler works lol
Chris Moore
Chris Moore 4 महिन्यांपूर्वी
The bottom of the sprinkler is called the deflector and the bulb pops and the whole brass seat falls out. And no they all don’t go off like they do in the movies just where the fire is that sets the sprinkler head off. I’ve been installing them since 07.
DoctorX17 4 महिन्यांपूर्वी
Fun fact: this isn't the only design for sprinklers! There are some that aren't one time use, but this style is by far the most common. The only "flaw" is that you can, y'know, break the ampule with physical force, but that takes more than a slight bump. Usually something more like someone doing cartwheels and kicking it or something silly like that.
JEFFERSON ALLEN 4 महिन्यांपूर्वी
2020!!! covid-19!
JEFFERSON ALLEN 4 महिन्यांपूर्वी
JEFFERSON ALLEN 4 महिन्यांपूर्वी
u guys have cool camera's
Fahad Naqvi
Fahad Naqvi 4 महिन्यांपूर्वी
Please make video on how much time eye takes in getting reaction when something sand type hits in eyes
MisterSoul2008 4 महिन्यांपूर्वी
Now you have the meadow full of broken glass.
Sentauri 4 महिन्यांपूर्वी
life hack: set play speed to 0.25
Wing Man Au Yeung
Wing Man Au Yeung 4 महिन्यांपूर्वी
Sprinkler head opens at 68 degree Celsius. Water pressure is needed to show the right spray pattern. Show intelligence, not dumbness
SMOKE 4 महिन्यांपूर्वी
Watching in 2160p 60fps
Timer Twinkler
Timer Twinkler 4 महिन्यांपूर्वी
I just noticed higher fps means something is going slower then low fps.
Lord Matthew
Lord Matthew 4 महिन्यांपूर्वी
Its like iv never seen a fire sprinkler before
James Perkins
James Perkins 4 महिन्यांपूर्वी
Didn’t know there where opossums in the UK.
Michael Gentile
Michael Gentile 4 महिन्यांपूर्वी
I thought the gear like thingy spun.. I'm kinda disappointed now..
Gh5rd5 Playzz
Gh5rd5 Playzz 4 महिन्यांपूर्वी
5:16 is the ultimate crack of the red glass
Nixalin 4 महिन्यांपूर्वी
Aww yes American thing
UNBOXING NOW 4 महिन्यांपूर्वी
Anyone indian?❤️
K R 4 महिन्यांपूर्वी
4:21 ;)
Dakota Donna
Dakota Donna 4 महिन्यांपूर्वी
Any other sprinkler fitters noticed he used a sprig up as a drop lmao 😂😂
TylerandMoRoll 4 महिन्यांपूर्वी
After watching your video of you adding the SFX / Foley sounds you add in these videos. I can't help but start to tune in on it more. And I gotta say. Adding those DEFINITELY makes these more aesthetically pleasing.
Benjamin Curley
Benjamin Curley 4 महिन्यांपूर्वी
0:56-0:57 "american... uh- *things* " (10 seconds later) FARENHIET lol
F4 Phantom II Official
F4 Phantom II Official 4 महिन्यांपूर्वी
Its at about 57 british things Celsius
Harry KelloTM
Harry KelloTM 4 महिन्यांपूर्वी
American things
Jordan Quichocho
Jordan Quichocho 4 महिन्यांपूर्वी
I only watched 2 vids and these guys had me subbed and notis on already,very funny and satisfying to watch
MaxDasNilpferd 4 महिन्यांपूर्वी
I saw this video 2months ago in my School Class.
엑쥬페리갤러리 4 महिन्यांपूर्वी
cptcrogge 4 महिन्यांपूर्वी
Won't this go off in case of an earthquake?
Dima G
Dima G 4 महिन्यांपूर्वी
So there's glass shrapnel flying around and you two morons aren't behind plexiglass?
Jarett 4 महिन्यांपूर्वी
and i thought the gear lookin bit spun.
최대니 4 महिन्यांपूर्वी
oh i saw a fire sprinkler as spitfire
Atomize 5 महिन्यांपूर्वी
“Money will come and go, we know that. But the most important thing in life will always be the people in this room, right here, right now”
Ghost of Me
Ghost of Me 5 महिन्यांपूर्वी
Why is the background black with the 103,000 FPS?
Bronson Crawford
Bronson Crawford 5 महिन्यांपूर्वी
The red stuff is mercury LMAO
KorisnikBr1 5 महिन्यांपूर्वी
Those Sprinklers are usually under 5 BARs of pressure
campanaro99 5 महिन्यांपूर्वी
That camera sounds like my pc when i play minecraft with a 64 chunk render distance
campanaro99 3 महिन्यांपूर्वी
@Kevin Davis LOL
Kevin Davis
Kevin Davis 3 महिन्यांपूर्वी
n3rd al3rt
neal conn
neal conn 5 महिन्यांपूर्वी
Should have done some lower K residential heads since they were using a gardening hose. Would have had a much larger wow factor
JKewgie 5 महिन्यांपूर्वी
Them: "You can see this at 103,000 frames per second!" Me, setting the video to .25 speed and getting 412,000fps: "Pathetic...."
Ben S
Ben S 4 महिन्यांपूर्वी
ThAt’S nOt HoW iT wOrKs!!1!!1!1
Fredashay Klavierstein
Fredashay Klavierstein 5 महिन्यांपूर्वी
0:50 We call them "Freedom Units."
Buck Jolicoeur
Buck Jolicoeur 5 महिन्यांपूर्वी
1:48 I can see the "metal bit" flipping around.
Volt Vortex
Volt Vortex 5 महिन्यांपूर्वी Link to “We’re All Heroes in Slow Mo” by The Gregory Brothers This is the channel trailer for the Slow Mo Guys that is posted as “unlisted” for some reason, but it’s so awesome!
The Epic Gamerz
The Epic Gamerz 5 महिन्यांपूर्वी
I never knew that 8k existed back in 2019.
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