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u/night-sleeper 1d ago
The B-hose has a high water delivery capacity and can transport between 400 and 800 liters of water per minute at an operating pressure of approximately 8 to 10 bar. so around 1.400 und 2.800 liters
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u/Wild_Stock_5844 1d ago
Thats a C-Hose have you ever had a B-Hose in your hand while on? You can bearly move A B-Hose is not for Inside attack C-Hose delivers about 240 Liters per Minute
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u/night-sleeper 1d ago
Thanks for the correction its interesting. Honestly, I have no real experience with hoses, so I just went with what I found online. Good to know that B-hoses aren’t used for inside attacks. Learned something new!
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u/MrFastFox666 1d ago
TIL there's different types of hoses for different types of fires.
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u/TGS_delimiter 1d ago
They refer to the passthrough capabilities, A is highest and it goes down from that. From my noob knowledge, B lines are used from the outside when you need to cover some distance.
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u/Someone-Anyone- 1d ago
That amount of water would be for either water shields or water cannons both of which are stationary and fixed in place by the water pressure or anchors. The guy in the video is using about 150l/min.
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u/jankeyass 1d ago
You can hold a b-hose but barely, the kick when you open it is comical in testing (had a colleague almost fly back)
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u/Donatello-15 1d ago
I've always wondered
Given the same circumstances,
What if the water coming out of the hose was freezing cold?
Like 5-10 Degrees Celsius?
Would it noticeably affect how much water he needed to use?
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u/GeneralKonobi 1d ago
If high school physics taught me right, the starting temperature of the water would have little no noticeable effect. The bulk of the work water does in putting out fire is absorbing the heat used to sustain the reaction that is fire. The vast majority of that energy absorption is done by the phase change to steam.
For example, when you boil water on a stove, it only takes a few minutes to reach 100C and boil regardless of if you start with 1C water or 50C, then far more energy over time to turn that boiling water to steam
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u/SpartanKelly 1d ago
It's actually a common misconception that firefighters just use water to put out fires. What really helps suppress the fire is when the water turns to steam — that steam displaces oxygen around the flames, helping to suffocate the fire.
And for water to turn into steam, you need hot water...
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u/Repulsive_Ad_3133 1d ago
Could actually be less good at putting fire out because of the leidenfrost effect
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u/Someone-Anyone- 1d ago
So our nog nozzles (the piece we spray water from) can deliver between 100-400 liters per minute. With the way this guy is moving around I'd say he's using about 150l/min. At 400l/min you definitely need a buddy to steady you and the hose from behind as the kickback of the water pressure is really strong.
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u/Zweefkees93 1d ago
Sorry, no math, just wanted to say; I don't give a single crap how well protected you are... That is f*cking scary!!!! Props to the firefighters
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u/SoylentRox 1✓ 21h ago
Yes. See all those wood pieces fallen down at angles. Those were holding the roof up. This is extremely dangerous because of the risk of collapse.
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