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- Newsgroups: rec.scuba
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!att!devildog!atux01!graff
- From: graff@atux01.att.com (Christopher Graff)
- Subject: Re: Nitrox Diving
- Message-ID: <1992Dec21.203228.4061@atux01.att.com>
- Organization: AT&T Corporate Education and Training
- References: <1992Dec11.173748.15773@u.washington.edu> <1h4jmuINNeus@transfer.stratus.com>
- Date: Mon, 21 Dec 1992 20:32:28 GMT
- Lines: 47
-
- In article <1h4jmuINNeus@transfer.stratus.com>, gd@gehenna.sw.stratus.com (Greg Dawe) writes:
- > In article <1992Dec18.200249.13155@atux01.att.com> graff@atux01.att.com (Christopher Graff) writes:
- > > Im thinking about taking the Nitrox course next summer and I plan
- > > to purchase a Poseidon reg setup early next year.
- > > What bit I know is that you can have
- > > Viton rings installed in the 1st stage and maybe 2nd stage of the reg.
- > > and I think they install them on the tanks also. There purpose is
- > > that they dont corrode fron the higher O2 concentrations so you
- > > wont have to have them replaced. I was told they run about $50-60
- > > . So Im going to have them installed when I buy the reg setup.
- > > Next time I get over to the shop Ill see if I can get more details.
- > >
- > Does the $60 include O-ring installation and cleaning? For that price I hope
- > so! It probably doesn't include a cleaned HP hose and cleaned SPG, but you
- > won't need that for a standard ANDI/IANTD NITROX course.
- >
- > I clean/service my own (and a few friends) O2 compatible regs. We buy
- > our O-rings either from a dealer (like Underwater Applications who kits them
- > up for a particular regulator) or directly from a manufacturer. The rings
- > for an average reg, like a Sherwood Brut, shouldn't cost more than $12 or so.
- > But you also need lubricant, solvent, clean gloves, etc - the costs mount up.
- > And then there's the issue of clean HP hoses and gauges for EAN mixes with
- > more than 40% O2. On top of it all, the current recommendations are that
- > gear setup for O2 service should be inspected/cleaned every 6 months or so.
- > O2 cleaning/inspecting is probably going to turn into quite a business for
- > the shops how want to do it.
- > --
- > Greg Dawe
-
-
- Ok I received a bit more information from the shop.
- The Viton rings are silicon o-rings except that there lubricated
- with a chemical called Critox (Unsure of spelling) instead of silicone
- grease. This prevents
- corrosion and combustability with pure O2. They are replaced once
- a year. They are installed in 1st stage and tanks. Most mixes of
- Nitrox are usually under the 40% figure so you dont have to worry
- about the clean equipment fear that much. There is more to the cleaning
- of equipment in hoses and tanks but I didnt have time to get into a
- lengthy discussion about Nitrox. When I have more news Ill let you
- know. The service is about $50.
-
- If you have any more info let me know.
-
- Chris
-
-
-