How a Fire Sprinkler Works at 100,000fps - 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




  • In the replies to this comment i'll be taking names for the possum.

    The Slow Mo GuysThe Slow Mo Guysปีที่แล้ว
    • Garry

      Zane ChristiansonZane Christianson2 หลายเดือนก่อน
    • Joe

      Lavish AllianceLavish Alliance4 หลายเดือนก่อน
    • Maybe but hopefully not dead possum named Garry Osborne Demetrius Pierre von Rollo the III of Whitestone

      Hip2besquare 6Hip2besquare 65 หลายเดือนก่อน
    • Daniel jr

      Andrew TidwellAndrew Tidwell5 หลายเดือนก่อน
    • Dirk

      Dylan ZhangDylan Zhang5 หลายเดือนก่อน
  • 5:16, thank me later

    Rados BrzakovicRados Brzakovicวันที่ผ่านมา
  • "68 degrees C, or 155... American things" Uh...I think it is coffee cups? Warm cats? Freedom Units? I don't know. They are willing to measure stuff with anything but International Units.

    Adolfo Ontiveros SosaAdolfo Ontiveros Sosa3 วันที่ผ่านมา
  • "This glass will hopefully expolde at 68c or a 155... american... thing"

    ToasterToaster4 วันที่ผ่านมา
  • That is the best camera I have ever seem

    Bilal AnsariBilal Ansari6 วันที่ผ่านมา
  • Dan's '68 degree C or 155 American Things' reminds me of some American channel trying desperately to explain what 1 m social distancing was to Americans. So they resorted to saying 'Keep one alligator length away from each other', which, if you think about it, is the most American of things ever.

    Theena KumaragurunathanTheena Kumaragurunathan7 วันที่ผ่านมา
  • What program are you guys using for slow motion ?

    Seth AmericaSeth America7 วันที่ผ่านมา
  • I have had inmates in jail that have broken the ampules to activate the sprinkler system in their cells to flood them. The water that comes out is blackish and clears up eventually because the water pipes have a lot of sediment in them because the water has been sitting in them for so long. So everything is pretty much blackish.

    comcastjohncomcastjohn7 วันที่ผ่านมา
  • So now show "the real thing".. means water being under live sprinkler system pressure... (as it is the case in a sprinkler waterpipe system)... then blow the ampoule. zap.. . the showering fog of a water cloud builds up then.

    Bernd PBernd P8 วันที่ผ่านมา
  • "Just throw it away!" "I don't wanna let them win!"

    Ruby: Amateur TacticianRuby: Amateur Tactician8 วันที่ผ่านมา
  • Is it just me or does he look just like Q from Impractical Jokers?

    CamJam 312CamJam 3129 วันที่ผ่านมา
  • What was the fluid inside the quite compact bulb that expands?

    2MDJR ASC-12MDJR ASC-19 วันที่ผ่านมา
  • I just asked Google and apparently the V2511 Is 150000$!!!???

    Killerpirate 112Killerpirate 11210 วันที่ผ่านมา
  • Nice

  • It would be cool if you could bleed the air out of your line before filming, remove that burst of air halfway

    Kyle HeitzenraterKyle Heitzenrater16 วันที่ผ่านมา
  • When the word “blowy” came out. Don’t think I didn’t see a smile appear across Your face Gav.

    Jay WatsonJay Watson17 วันที่ผ่านมา
  • Bit disappointed the water pressure wasn't up to spec. Would look totally different

    Luke PhilpotLuke Philpot17 วันที่ผ่านมา
  • This is why sprinklers are installed in highly pressurized steel pipes. Also, if this was actual sprinkler water Dan would not want to be anywhere near it because it's likely black water. Black water is disgusting

    Wolverine101Wolverine10117 วันที่ผ่านมา
  • Great video! Do you mind me downloading the video to show it for educational reasons? (Fire defense / fire protection / fire safety)

    Michael KargerMichael Karger17 วันที่ผ่านมา
  • I feel like Ozzie is a good name😁

    Alex PadgittAlex Padgitt18 วันที่ผ่านมา
  • 0:30 Gav, the way you put those cameras down, you'll do yourself a terrible injury one day. It's all in the knees. Knees are designed for bending. Spines are not. Neither are the lumbar muscles. Please, for your health and the health of others, set a better example to your younger viewers. Sure, they didn't come here for proper lifting form, but maybe seeing you both putting heavy things down safely now and then will help reinforce safer behaviours in your younger viewers.

    Blake Lonsdale-CookBlake Lonsdale-Cook18 วันที่ผ่านมา
  • "It's not often that I use a blow torch and get wet." Hahahaha Great video guys!

    sedge 65sedge 6520 วันที่ผ่านมา
  • @4:41, @5:35 with the music and view. Wow!!! What in the beautiful is that??? Why do I feel joy?? Am I about to cry?

    1cosmicdebris1cosmicdebris21 วันที่ผ่านมา
  • sprinkly bois

    PenguinJP MCPenguinJP MC22 วันที่ผ่านมา
  • I don't think it's air... It's water vapour. The kickback from the flow might cause a pressure wave/cavitation?

    BasicBasic22 วันที่ผ่านมา
  • We dont realize how beautiful water is

    Brett B.Brett B.23 วันที่ผ่านมา
  • the slomo guys put this relaxing aquarium music that just mekes me sleep instantly

    Twirl.-Twirl.-24 วันที่ผ่านมา
  • Possum, wisterias, and slow mo. The perfect video does exist.

    RTRFriendorphoRTRFriendorpho24 วันที่ผ่านมา
  • I love seeing stuff like this. Who would've thought the sprinkler worked like that? A lot of people probably... But I've just never seen it.

    TARDIS FilmsTARDIS Films24 วันที่ผ่านมา
  • very useful video .. who is still watching in 2020 in May

  • the possummmmmmmm!!! its widdle legs

    Not Quite ChaosNot Quite Chaos24 วันที่ผ่านมา
  • when dan blanks on the word for Fahrenheit and calls them "american things" omg i'm

    Not Quite ChaosNot Quite Chaos24 วันที่ผ่านมา
  • I come for the accent.

    One Like UsOne Like Us24 วันที่ผ่านมา
  • Is that giant rat?

    Rafif TaqiyuddinRafif Taqiyuddin25 วันที่ผ่านมา
  • Inst that supposed to be under more pressure?

    Yeetius MaximusYeetius Maximus25 วันที่ผ่านมา
  • Flippin eck

    Epic DogeEpic Doge25 วันที่ผ่านมา
  • do you speak german?

    TheGamerMi2TheGamerMi226 วันที่ผ่านมา
  • I love your videos but I would never let you guys touch my brakes.

    Christopher ChaplinChristopher Chaplin26 วันที่ผ่านมา
  • There are also three basic sizes of glass tubes. Smallest diameter to largest: quick response, standard response, and the servers are more important than you are...

    Christopher ChaplinChristopher Chaplin26 วันที่ผ่านมา
  • 103.000FPS.... And the glass break is still instant.

    JP LabsJP Labs26 วันที่ผ่านมา
  • 1:45 every one of their videos is now becoming an attack against the TH-vision compression algorithm

    Shrey MittalShrey Mittal27 วันที่ผ่านมา
  • When one breaks why do the others along the line also break or is that just Hollywood?

    crazy tcrazy t28 วันที่ผ่านมา
  • This has been from observing them and taking information from other places By what I have seen most of these have also a bubble in them that takes the force until it gets to the point where is can’t anymore and then the pressure continues to build until it bursted. I’m guessing that the liquid in the tube is just a water dye mixture. Then once the capture blows it then slows the plunger to be launched out by the water. I also think my school has had this happen (building finalised in 2013) as they allow 6th formers to get jobs inside the school and part of my job included looking after the DofE kit store located in the boiler/plant room. And over half them instructions on a4 paper for how to stop and reset the system where taped onto the unit and the science department had to deal with water damage to the floors.

    crazy tcrazy t28 วันที่ผ่านมา
  • Actually Fahrenheit is a German thing.

    Wm KWm K28 วันที่ผ่านมา
  • the glass vial holds a metal plug in place. The bottom tip of the metal plug has a slanted face so when it hits the fan shaped diffuser it will bounce off to one side and not get stuck there.

    Brian SuBrian Su28 วันที่ผ่านมา
  • 1:18 when I see my neighbor in underpants...

    Blutgruppe Jesus negativBlutgruppe Jesus negativ29 วันที่ผ่านมา
  • Went to Pornhub immediately after seeing this.

    requiemsamarequiemsama29 วันที่ผ่านมา
  • Its called freedomheit. And we wouldn't have it if it wasn't for you all and your imperial system.

    Jim CJim C29 วันที่ผ่านมา
  • Name for the possum.. Myatt

    Muerto NiteMuerto Niteหลายเดือนก่อน
  • What on earth would you need a fire sprinkler that goes off at 260C for?

    Quirky ViewQuirky Viewหลายเดือนก่อน
  • That’s some great compression TH-vision

  • What kinda flowers are on that fence at 6:57?

    Ethan BlakeEthan Blakeหลายเดือนก่อน
  • why doesn't he just stand up and use the blowtorch underarm. save the splash int he face.

    Scott FrameScott Frameหลายเดือนก่อน
  • American things 🤣

    Playstation LoverPlaystation Loverหลายเดือนก่อน
  • i think the liquid is a bright colour so people can see if it has already went or will it go off in case of a fire

  • I love how they use 100K+ cameras and don't have a second pair of safety glasses

    Charlie BingamanCharlie Bingamanหลายเดือนก่อน
  • What would have Ripley done in the medbay without a zipper? No problem. Just give the nozzle a good whack to break the glass.

    Get RealGet Realหลายเดือนก่อน
  • .....arent possums nocturnal?

  • 0

    carlens charlescarlens charlesหลายเดือนก่อน
  • I worked as a building engineer and have unfortunately been present when one was set off by a painter. Something that most people don’t think about is that the water in the pipeline has in most cases been their for many years and you get doused with water that smells like a sewer. I mean its really bad.

    Keith BrownKeith Brownหลายเดือนก่อน
  • Loved the Nature Channel part😂

    Alexis AstrieAlexis Astrieหลายเดือนก่อน
  • Pro Tip: Watch in 0.25% speed for super slow motion!

  • I would love to see heat distortion in slowmo

    Josh PrenticeJosh Prenticeหลายเดือนก่อน
  • The mix at the end is brilliant! lmao! Cool idea, but for obvious reasons, I'm glad you had reasonably low water pressure! I would rather see you wear a full face shield, since apparently you were unaware of what the liquid was and the bits of glass.

  • lot of sprinkler experts in the comments. alrighty roo

  • Daaam daniel!

    Alpha Dragon1337Alpha Dragon1337หลายเดือนก่อน
  • Please slowmo the evaporation

    sohaib akhtersohaib akhterหลายเดือนก่อน
  • guy on the right: "i think it's not good. i think it's not lead free.." guy on the left: chile... anyways.

    Karen BailonKaren Bailonหลายเดือนก่อน
  • Shocking😂

  • I’m American and even I hate Fahrenheit. Why is freezing at 32 and boiling at 212. 0 and 100 is a bit easier

    Zane MeyerZane Meyerหลายเดือนก่อน
    • I've thought the same thing since learning the metric system back in high school!

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