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Steve;
I went through the same process with my cyclon 300 a few months ago. There were
some useful answers to my questions posted on Techdiver, and perhaps you can
access them through the archives. Unfortunatly, I don't have the text on disk,
so I can't forward the information to you directly.
In summary, this is what I learned:
Only the first stage needs to be prepared for O2 use. The second stage is not
subjected to O2 pressures thigh enough to give you a problem.
O ring "kits" are not available, but the actual O2 compatible (viton) O rings cn
easily be obtained. I purchaced some by taking ther original O rings to a gas
supply house, and they provided me with the same sized rings in viton. It was
pretty inexpensive.
The diaphragm in the Cyclon 300, however, is a different story. It isn't a
standard piece, like an O ring, and Cyclon does not make an O2 compatible
version. Personally, I don't think that it would cause a problem, however there
"may" be some risk involved.
I learned that US Divers provides a conversion kit for some of their diaphragm
first stages. That kit includes viton O rings, Christolube and a new HP seat.
Interestingly, it does not include a different diaphragm. So perhaps, the
Cyclon 300 diaphragm is not really a concern.
By the way, after all was said and done I decided not to prepare my cyclon for
O2 use; it has too many soft parts, and I found a simple piston first stage that
has less parts to fiddle with.
Hope this helps.
Andy Cohen
______________________________ Reply Separator _________________________________
#1. I have a Poseidon Cyclon 300 regulator I am now using for staged
nitrox50 deco. Poseidon don't make a O2 service kit for this reg.
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