[PSUBS-MAILIST] At Home O2 Cleaning Process

[Alan via Personal_Submersibles]

Brian,
not familiar with them. Mr Google knows everything!
I bought steel tanks with scuba fittings mainly because everything is
designed to go in salt water & I know I can get them filled 7 days a week.
I need to look at all this again for this build. I will look at how I can interchange 
between medical fittings & dive fittings in case I am holidaying with the sub
& need to fill where they only have industrial gas. 
Cheers Alan

Sent from my iPad

> On 7/01/2018, at 3:39 PM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> Alan,  Which is more common the CGA 870 or the CGA 540 ?      Is one a yoke style and the other a flare type fitting?
>  
> Brian
>  
>  
>  
> 
> 
> --- personal_submersibles at psubs.org wrote:
> 
> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] At Home O2 Cleaning Process
> Date: Sun, 7 Jan 2018 13:14:59 +1300
> 
> Brian,
> have a look at this outfit. EMT mecical company.
> http://www.emtmedicalco.com/OXYGEN-AIR-FLOWMETERS-FITTINGS_c85.htm
> They are based in Washington State & I have bought from them & found them
> reliable. Have a look through the rest of their stock, they have a lot of O2 fittings etc.
> Alan
> 
> Sent from my iPad
> 
> On 7/01/2018, at 8:56 AM, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> I just talked to my local dive shop and they will fill O2 no questions asked .  They say they do it all the time.  I'm thinking of getting set up with a package from DAN  Here:
>  
>  
> https://www.diversalertnetwork.org/dive-store/?catno=9
>  
>  
> It seems to be somewhat problematic getting the right all the components but getting one of these units from the DAN website might make things easier as far as getting bottles filled and so forth.  The delivery system on these units I don't think has enough fine tuning ability however.  Does anyone have a good flow meter to recommend?  Is there an analog type with a little ball that floats up and down? 
>  
>  
> 
> Brian
>  
> 
> 
> --- personal_submersibles at psubs.org wrote:
> 
> From: "Sean T. Stevenson via Personal_Submersibles" <personal_submersibles at psubs.org>
> To: personal_submersibles at psubs.org
> Subject: Re: [PSUBS-MAILIST] At Home O2 Cleaning Process
> Date: Sat, 06 Jan 2018 13:58:20 -0500
> 
> I use dilute acetic acid to remove any existing corrosion, and then a non-solvent hydrocarbon-free detergent solution to clean, followed by a freshwater rinse, and possibly another cycle using a separate clean batch of detergent solution. Use dedicated brushes for each bin. A lint-free cloth should come back clean, and the cleaner solution and rinse water should both produce no fluorescence under UV (black light). Dry passively, or with filtered air or bottled nitrogen so as not to reintroduce any contaminants. Any subsequent lubrication or assembly with lubricated soft parts should be done with oxygen compatible lubricants (i.e. Christolube).
> 
> Sean
> 
> Sent from ProtonMail mobile
> 
> 
> 
> -------- Original Message --------
> On Jan 6, 2018, 09:23, Steve McQueen via Personal_Submersibles < personal_submersibles at psubs.org> wrote:
> 
> All, I am working on cleaning some parts/pieces for O2 service on my K-250. I am buying most items “pre-cleaned” such as: Tank w/Valve, First Stage Regulator, Thru Hull Isolation Valve, Flow Regulator.
>  
> However, I will have some parts & pieces (mainly misc. adaptors and ¼ SS tubing) I may still need to clean.
> I know an “at home” process will fall short but looking to create/document a procedure anyway.
> 
> ·        I am using ASTM G93, "Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments" as the standard.
> 
> ·         
> 
> ·        Maybe someone already has a procedure (or opinion) they want to share?
> 
> Steve
> 
>  
> 
> ·         
> 
>  
> ·        I am using ASTM G93, "Standard Practice for Cleaning Methods and Cleanliness Levels for Material and Equipment Used in Oxygen-Enriched Environments" as the standard.  I know an “at home” process will fall short but looking to create/document a procedure anyway.
> 
> ·         
> 
>  
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