Hi Hugh,
It's a little of a tangent, but I've just got rid of the
air regulators altogether. I stole the idea from Greg Cottrell, on the basis
that the fewer moving parts is best. I simply pipe in HP air with Swagelok
tubing and regulate the MBT blows with needle valves. Of course there's still
hull stops, and a cross-over valve allowing you to supply the blow line for both
tanks from either bottle, but it is certainly a simpler setup.
For O2, the regulator should ideally go outside as low
pressure O2 is far less likely to ignite than HP, and if an O2 fire is to occur,
it would be rather nicer to leave it on the outside. I can't recall what brand
my O2 regulator is, it's just a SCUBA 1st stage cleaned for use with 100% O2.
The 1st stage feeds a little medical O2 metered regulator that's
inside. I'm sure there are much more sophisticated solutions, and must
admit I've never even turned on my O2 system because my dives are too
short to need it, but I expect that to change next time out since Snoopy is now
a 2 person boat.
Thanks,
Alec
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Placement of regulators and choice of
them.
For Air and oxygen. Is it best to have
the regulators inside or outside the pressure hull? I noticed that some
have the regs outside and others inside.
What brand/models have people found the
best? Hugh
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