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> I have a problem that maybe someone could offer a suggestion for. I dive
> with a USD CONSHELF SEA reg. I frequently experience a dry mouth throat
> about 40 minutes into a dive. Are these regs typically extremely dry
> breathers. I read on a thread somewhere where the OASIS was a wet/moist
> breather. I am considering switching to this but it is hard since my USD
> has a couple hundred hours logged without any problems other than the
> dryness. Any suggestions ?
As a general rule, regulators with plastic housings give the dryist air.
Metal second stages tend to be a bit more moist because the moisture from
your exhalation tends to condense on the inside of the regulator, helping
to moisten the dry air coming in from the tank. The Oasis takes this
principle to a high level of development by strategically placing metal
fins inside a plastic second stage. These fins work VERY well, and I
have found the inhaled air to be nice and moist.
As an aside, we have had LOTS of CO2 retention problems when using the SEA
second stage. We have had frequent headache problems on shallow dives,
and some near blackouts from CO2 buildup on deep air dives in the 200FT
range. We have NOT experienced these problems from Mares, Sherwood, and
Poseidon second stages. Its amazing how often a diver complains to me
about a headache on a dive boat and when I look he has an SEA second stage
or equivalent.
Jody Svendsen
MiG Technologies
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