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How does Life Jackets on Airplanes Inflate?

How does life jackets on airplanes inflate by just pulling 2 cords on both sides of the jacket?? Incase if the life jacket doesn’t inflate, we need to blow through a pipe. How come air doesn’t go out throught this pipe once inflated??

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5 Comments

you use ur seat!


all you have to do is pull a trigger


CO2 cartridges and a one-way valve.


Good Question.

1. There is a compressed air cylinder that inflates the Jacket once the cords are Pulled.

2. As a Back Up Safety Procedure…. they can be INFLATED… by blowing on the Tubes….!

3. There is A CHECK VALVE….. One Way… that Allows AIR IN…. BUT… NOT OUT!

Thanks, RR


there’s compressed air in a tube much like a CO2 cartridge is for a bb hand gun. once the cords are pulled the air is released. and why the air doesn’t go through it……. it’s a one way valve


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