Mailing List Archive

Mailing List: techdiver

Message Display

Steve Millard wrote:

>>#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.  They only 
make one for the two 'top or the range' regulators, the 'Jetstream' and the 
'Cyclon 500'.  In the USA they have different names, but the Cyclon 300 is the 
lower performing 1st stage and the older style 2nd stage with the exhaust 
diaphragm at right angles to the mouthpiece rather than at 45 degrees.  
		It is a mystery to me as to why Poseidon will supply O2 parts 
for their highest performing regs, which are most suitable for deeper diving 
when nitrox is a shallower water or deco gas.  Anyway, one of the USA visitors 
said that O2 compatible o-ring/valve seat kits *were* available in the USA from 
an independent supplier.  Does anyone out there have any more info ??<<

Hi Steve,

Poseidon is using the Cylon 300 for their oxygen rebreather. This rebreather is
a military unit and not sold on the civil market. It is manufactured by Poseidon
Germany. I have spoken to a Poseidon service technician and he told me, that
they are replacing the NBR o-rings with Viton o-rings. The diaphragm is the same
as in the standard non-O2 cyclon 300, and that they never had any problems with
this diaphragm  in the oxygen rebreather. They won't sell parts to the end user,
especially no parts which are used in the military unit.

So, I got Viton o-rings to replace the standard o-rings from an o-ring company.
There are some o-rings with a thickness of 1,6 mm in the first stage  which is
not as common as 1,78 mm, which is mostly used in US and Europe. The 1,6 mm
thickness seems to come from a Swedish standard. If you need the size
description for the o-ring set, give me a note.


Regards, Reinhard


E-mail from Dr. Reinhard Buchaly, Germany
100420,252@co*.co*
2.6.95.  00:25 

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]