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Whenever you put a regulator back in your
mouth underwater you need to clear it before
you can breathe from it again.
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This is perhaps the simplest and most
dangerous of all the skills you will have to
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The most important rule in scuba diving is: never
hold your breath.
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If you hold your breath while you ascend, the gas will expand and can seriously injure or kill you.
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This is why any time a regulator comes out of
your mouth you must blow a steady stream of
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This has to be a habit and needs to be
performed from muscle memory.
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It has to happen without thinking in order for you
to be a safe diver.
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Never hold your breath when you're scuba
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In this video we are going to demonstrate the
two methods for clearing a second stage.
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The first method is the blast method
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and the second method is the purge method.
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Remember: any time a regulator is out of your
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you must blow a steady stream of bubbles.
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This is the blast method. Take the regulator out,
point it mouthpiece down so that it doesn't free
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...steady stream of bubbles...
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To clear the second stage, you simply cough
forcefully through it.
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The purge method, when you take the regulator
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... make sure you blow a steady stream of
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when you put the regulator back in, put your
tongue in the hole of the mouthpiece
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before you push the purge button.
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When you push the purge button,it clears the
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When you take a regulator out, if you point it
mouthpiece up, it will free flow.
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And you can go through about 1500 PSI per
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So make sure any time a regulator is out, you
point it mouthpiece down.
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Remember: the most important rule of scuba
diving is never hold your breath.
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