The high pressure swivel connection between the guage and the hose is one of
the weakest points in a compressed gas system. If only one is carried then
only one can fail, two gauges is 100% increase in potential failure.

In a rapid air loss you will know which one has failed pretty quickly, if
the side with the guage is showing a rapid fall it is that one, if not it is
the other although you should be able to put your hand behind your head a
feel which regulator is blowing at the first stage/neck seal. If it is a
second stage then a free flow is obvious also.

In theory you should breathe from the failing unit to maximise your air
supply until it is exhausted although how many would do this in reality
remains to be seen.


----- Original Message -----
From: Manos Manoli <manos@ma*.co*.cy*>
To: Tech Diver <techdiver@aquanaut.com>
Sent: Thursday, April 27, 2000 7:50 PM
Subject: Preasure G.


In case of a rapid air loss and after isolating the two sides wouldn't
be easier to
identify from which side im leaking if i had 2 psg rather than having
only one ? ?

At the end of the day why not 2 ?

Manos




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