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With all the postings on Poseidon regulators I thought I might put in my
little bit, assist Andrew Brill & correct Bill Dyer.
First the correction - Poseidon DO NOT make a Compensated Piston. I have
only seen Diaphragm regulators from them. Ignoring the new Triton for the
momement Poseidon produce 2 1st Stages & 2 2nd Stages - the mixing &
matching of these gives the 4 regulators that are sold by them - with
different names to add to the confusion.
The Unbalanced Diaphragm (Called a Compensated Diaphragm) 1st Stage has been
produced for at least 20 years (maybe longer) and can be found in the
Oceanair & Cyklon 300 (called Thor & Cyklon in the USA). {so much for the
'fact' that you have to have a balanced regulator for performance - this 1st
stage manages to beat the pants of a number of Balanced Regs}
The Balanced Diaphragm 1st Stage has been around for about 10 years and
first appeared in the Maximum. It can now be found in the Jetstream &
Diveair (called Odin & Cyklon 5000 in the USA) and I presume it formed the
basis for the Triton's first stage.
The older Poseidon 2nd stage is the downstream unit that can be found in the
Diveair & Cyklon 300.
The newer upstream servo assisted unit can be found in the Jetstream &
Oceanair.
The early Poseidon's used a different thread to that which is used now (it's
sometimes incorrectly called a 'metric' thread) This thread - 1/8 Inch BSP
will allow 3/8 UNF to screw in a few turns but after that the thread gets
stripped. When Poseidon changed over they started to clearly mark the 1st
stage body if it had 3/8 UNF threads. If you buy old Poseidon's be careful
when installing new parts - check with a trained Poseidon Tech if you are
unsure.
Anyway - Andrew Brill wanted to know if he could change his Cyklon 5000 by
adding an Odin - no problems if both 2nd stages are the same - just make
sure to adjust the Intermediate Pressure to 10 bar (145 PSI) - which is what
it should be anyway (this is with a tank pressure of about 20 bar, when it
goes on a full tank - up to 300 bar the IP may decrease - a variation of
less than 1.5 bar is acceptable).
Well I hope I haven't bored too many of you. All I can say is if you use the
Poseidon's, get hold of the Service Manual - it contains all this sort of
data.
-------------------------------------------------------
Zyg Poliniak | Phone: 61-3-252-3072 (B/H)
| Fax: 61-3-252-7390 (B/H)
Melbourne | Email: <zyg@ac*.ne*.au*>
Australia | Email: <100353.1605@co*.co*>
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