[PSUBS-MAILIST] 02 tank

[Rick Patton via Personal_Submersibles]

Sean,

My welding supplier here on the big island won't fill a scuba tank but a
dive shop here will as long as it's been 02 cleaned so checking with the
manufacturer on the mainland who makes the tanks that say they are "Nitrox"
ready to see if that would apply to 02 as well. If not, I'll have them
cleaned before shipping them here.
The dive shop charges a buck a cu ft to fill and didn't have a problem with
them being aluminum. I have several Large 02 bottles at my welding shop and
was also planning on doing the equalizing thing as well. or getting an 02
transfer pump to stuff the sub bottles if I have to so that both bottles
are completely full before leaving the surface every time.

Rick

On Thu, Apr 20, 2017 at 11:08 AM, Sean T. Stevenson via
Personal_Submersibles <personal_submersibles at psubs.org> wrote:

> I should note that I do my own fills, usually from industrial O2 cylinders
> (CGA-540 fitting). I have several, so a straight transfill gets me pretty
> close to the large cylinder supply pressure. If I need to go higher, I seek
> the services of a dive shop with a booster pump, but then you pay dive shop
> prices for oxygen.
>
> Sean
>
>
> On April 20, 2017 1:18:32 PM MDT, Alan via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>>
>> Rick,
>> I would approach the O2 supplier that you consider you will be getting
>> most of your O2 from, & ask them the question.
>> It would be no use cleaning yourself if they want some sort of
>> certificate.
>> I was advised by the local Padi dive centre to go with steel tanks, & I
>> got them
>> to clean them & the first stage regulator. They were specific about what
>> 1st stage regulators they could O2 clean. They put a nice big official
>> looking
>> oxygen sticker on the bottle & made me do an emergeny O2 providers course.
>>    The local gas supplier on the other hand was a bit clueless as to
>> requirements
>> & would only fill with a medical fitting.
>> Alan
>>
>>
>> Sent from my iPad
>>
>> On 21/04/2017, at 5:47 AM, Rick Patton via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Thanks Sean
>>
>> Rick
>>
>> On Thu, Apr 20, 2017 at 7:44 AM, Sean T. Stevenson via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>> Cylinder and valve will need to be oxygen cleaned and built or rebuit
>>> using viton o-rings and oxygen compatible lubricants; however, it is
>>> possible that it may come that way from the factory. Probably depende! nt
>>> on the manufacturer and retailer, the latter usually supplying newly
>>> purchased cylinders with an initial visual inspection sticker for
>>> recreational divers. With the prevalence of nitrox mixtures in recreational
>>> diving, it is becoming more commonplace to supply conformant cylinders, but
>>> check with your supplier. Oxygen cleaning is something you can do yourself,
>>> simply by using hydrocarbon free detergents, rebuild kits or o-rings which
>>> are O2 compatible (i.e. Viton), and O2 compatible lubricants such as
>>> Christolube.
>>>
>>> Sean
>>>
>>>
>>> On April 20, 2017 11:25:02 AM MDT, Rick Patton via Personal_Submersibles
>>> <personal_submersibles at psubs.org> wrote:
>>>
>>>> I asked this question a while ago but didn't get a response so thought
>>>> I'd try again.
>>>> Does anyone know if a new unused aluminum scuba tank would need to be
>>>> 02 cleaned?
>>>>
>>>> Rick
>>>>
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