Another "What if"?

[Digger]

<font color='#000080'>right, I had a look at the &quot;How deep can we go?&quot; debate, and what would happen to tanks etc. at great depth, and it got me thinking.

The interstage pressure in the hoses of my Poseidons is set at 9 bar. Therefore, if I dive to 80m, surely when I try to breathe I'm going to be in trouble. The pressure outside the hoes will become greater than inside below this depth, so why can I still breathe? (Not that I've tried this, but I've seen plenty of pictures of people at greater depth with similar regs)

Any ideas? It's Monday again! Oh, in case any of yu are at work, I just had a day off. Because I don't have any lectures. &nbsp;

God I love being a student. &nbsp;

[abucksdiver]

<font color='#000080'>Digger,
Isn't the first stage pressure between 8-10 bar above ambient (depending upon Reg manufacturer)?

So the first stage pressure at the surface might be 9 bar, but at 10 m it would be 10 bar etc.

abucksdiver (ignoring the &quot;I'm a student, get me out of lectures&quot; comments....)

[Digger]

<font color='#000080'>I see. I suppose it's a bit of info I don't really need, as I don't often adjust my regs underwater!!! I just got curious.