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To: techdiver@opal.com
Subject: feeling cut off and valves (old thread)
From: ddoolett@me*.ad*.ed*.au* (David Doolette)
Date: Sun, 13 Nov 1994 15:06:26 +1030
Hellow everyone.  I seem to have been cut off from opal.com for about a 
month, recieving mail from techdiver but being unable to send.  I believe 
everbody in Australia has been in the same situation, as all that I have 
contacted have said the same thing and I have noticed no mail on the list 
originating from au.  Today a ping to opal.com finally got through so I am 
going to send an old message that was returned as a test.

>
>Ronnie Bell <rbell@cp*.or*> wrote:
>
>> ... The last time I dived with a new cave buddy 
>> he asked me if I could turn ON his air. My reply was if you can't turn it 
>> on then how are you going to turn it off in a free flow situtaion?

>then Alan Wright

>My regs often bleed if I leave the air turned on out of the water so I
>usually leave the air off and ask my buddy to turn it out just before
>we go into the water. As I explained in another post I cannot do this
>myself without partially dekitting - which is relatively easy underwater
>but a pain on land/boat.

While we are discussing valves.  In the cave diving community in Australia, 
cylinder valves are opened completely (not back 1/4 turn), this has been 
taught as long as I can remember.

Secondly, leaving your air off until you get in the water or have kitted up 
is a bad practice.  In caving, it allows the possibility that you to set off 
into a restriction having forgotten to turn the cylinders on, if you have 
charged the lines previously you run out of air in about three breaths, 
enough time to get youself into a nasty situation.  Similarly it would not 
be nice to enter open water from a boat without your air on, particularly if 
the water conditions were poor.


regards,

David Doolette
ddoolett@me*.ad*.ed*.au*

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