Hi Rick,
I'm going to use 02 from an external
scuba tank. I got advice from a dive
store specializing in technical diving, that told
me there were only two
1st stage regulators on the market that they could
02 clean.
I bought the cheaper of the two which was the
Scubapro MK2.
My advice is find a similar store that is doing O2
cleaning & get there opinion
first as they'll probably have to clean it for you
anyway.
Regards Alan
----- Original Message -----
Sent: Saturday, July 02, 2011 6:25
AM
Subject: Re: [PSUBS-MAILIST]
Thanks Dan,
guess that explains why Kittredge used the Phos.
Bronze. I would love to keep all HP gases from entering the sub but that would
necessitate an 02 reg exposed to salt water? any ideas about that? I am also
not familiar with Phil's tilt/demand system, do you and the data on
that?
Rick P.
Sent: Thursday, June 30, 2011 2:22 PM
Subject: Re: [PSUBS-MAILIST]
Rick,
I built my K-350 according to the plans and made the
Phos. bronze fittings. If I had it to do over again I would skip that part and
bring the O2 into the cabin at low pressure instead of high. Stainless steel
is not favored for HP oxygen service. Phil Nuytten has the best system going
with the tilt / demand valve.
Dan Lance
On 6/29/2011 10:49 PM,
Land N Sea wrote:
I am building a K-350 and am trying to get as many
thru hull fittings welded in as I can before welding the end caps on. For
anyone who has the plans for a K-350, did you actually follow drawing 041-2?
it is the Phos. bronze removable piece for the 02 to pass threw and looks
quite expensive to machine if not doing it yourself.
I would like to hear from anyone regardless of boat
type that uses an 02 life support system what they welded in for a threw
hull fitting. I can't see why I just can't weld in a schedule 80 ss 316-L
pipe coupling then screw into that a HP valve then HP to LP 02
regulator then a proper flow meter for 02?? I would 02 clean the
nipples and coupler of course. Also any feed back for the ID
of pipe I should use would be appreciated.
Rick
P.