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Hi guys,

I'm asking for some information.  I received a dual tank manifold that's a
little different from any I have previously seen.  So before I go ahead and
start using it in the caves here in Akumal, I appreciate any experience any of
you have had with it or similar products.

The brand name and "S" symbol are from ScubaPro.  Both tank valves and the
center connecting piece say they were made in Italy.  The valves are of a 200
bar DIN type with the number "232 BAR" cast into their sides.  The right hand
valve cover is black and the left hand valve cover is light gray.  There is no
center isolation valve.

An interesting feature of the valves is that they have no burst disks.  The
valve castings look as though they were never drilled and threaded for the
burst disks.  One concern I have is the strength of this portion of the casting
since I have never seen this configuration previously.  Any comments?

I believe that one of the (if not "the") major reasons for an isolation valve
is the possibility of popping a burst disk, so I now need to evaluate whether
to consider the possibilitgy of using the manifold as is without an isolation
valve or to add one.  I'd really like input on whether the possibility of a
catastrophic problem with a tank O-ring, with both of the O-rings on one side
of the center connecting tube or with some other unusual manifold problem are
likely enough to warrant the addition of an isolation valve with the attendant
additional possible failure points.  With burst disks in place, the answer for
me is clearly yes, but without burst disks I'd like to get some advice from
this list.

In advance, I'd like to thank you for any information and opinions that you
would care to send my way.

Take care and safe diving,          Scott
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