O2 filling

Probably only a gas vendor would know.
Anybody ask one????




Dave S wrote:

Dallas wrote:


Something about the humidity being too high and freezing in the valve.


THIS IS PURE BS.

There is essentially NO moisture in the tank of medical oxygen - for the
same reasons there is no moisture in aviation or welders oxygen. Any
moisture or humidification in a medical stream is added at the point of
use, AFTER the flowmeter.

Any doctor, nurse, paramedic, EMT, respiratory therapist or gas vendor
can vouch for this.

Dave

Cary wrote:
On Nov 14, 12:15 pm, "Robert M. Gary" wrote:
With FBOs now charging $50-$100 to fill a tank I've started calling
around to see where else I can get O2 in the Sacramento area.
...cut...
-Robert

At Providence (KPVD) earlier this year they wanted $150 to fill my
little portable tank!!

Cary

I'm guessing you are paying 20 fold what the gas is really worth - its
been about 3 years since i sat down and priced all this. For that kind
of money you could get many many tankfulls of gas if you did your own
transfilling. EVEN WITH MEDICAL GRADE IN THE BIG TANKS.

So short of doing your own transfilling, where does everyone get cheap
O2? Or are you paying big bucks at the FBOs? For an occasional user,
the transfilling equipment does not make sense.

--Dan

Robert M. Gary wrote:
With FBOs now charging $50-$100 to fill a tank I've started calling
around to see where else I can get O2 in the Sacramento area.

The regional oxygen company (Roberts Oxygen) it he DC area primarily
handles the welding market with a secondary market for the medical
arena. My local office (just north of Dulles airport) doesn't fill
O2 bottles of any sort, just exchange them. The plant over by
GAI fills them. I can take my cylinder to the local office and they
will send it over to be filled and back (two day turn around).

Call around.

The only real difference to them as to welders/medical/diving/ABO is what
paper they give you back with the bottle. The O2 is all the same.
Cryogenic separation and the fact you don't want to screw around
with high pressure O2 in general means they treat them all to a
common high standard.

Dave S wrote:


Any doctor, nurse, paramedic, EMT, respiratory therapist or gas vendor
can vouch for this.

I was a paramedic and heavily into the equipment maintenance in our
fire department. An amusing story was that one day I was helping
another guy weld on one of the fire engine compartments. Suddenly
he stopped and said he ran out of oxygen. I said we have plenty
of oxygen and went and grabbed the thumper bottle off the ambulance.

On Nov 14, 8:40 pm, Dave S wrote:
There is essentially NO moisture in the tank of medical oxygen - for the
same reasons there is no moisture in aviation or welders oxygen. Any
moisture or humidification in a medical stream is added at the point of
use, AFTER the flowmeter.
Dave,
This source confirms your statement

http://www.c-f-c.com/specgas_products/oxygen.htm

Longworth wrote:
On Nov 14, 8:40 pm, Dave S wrote:
There is essentially NO moisture in the tank of medical oxygen - for the
same reasons there is no moisture in aviation or welders oxygen. Any
moisture or humidification in a medical stream is added at the point of
use, AFTER the flowmeter.
Dave,
This source confirms your statement

http://www.c-f-c.com/specgas_products/oxygen.htm

Thank you...

I would hope that after 16 years in fire, ems, healthcare and dealing
with compressed air and oxygen in general I would know what I was
talking about.

The whole "moisture" argument is one of the silliest OWT's around.

Airbus wrote:
A bit O.T. :
I read an accident report a few years back - an FBO in Europe re-filled an
O2 bottle with compressed air. In the ensuing high-altitude flight, the
pilot lost conciousness and the airplane crashed in the mountains. A
passenger, miraculously, survived and confirmed the cause of the crash due
to the pilot's unconciousness.

What I've wondered ever since I read it :
What would the FBO be doing with compressed air in the first place, and how
could this confusion occur? What *could* they have been thinking?


This would be complete negligence had this happened in the US - with the
standards in place.

The fittings in the US are spec'd by the Compressed Gas Association
(CGA) for different gasses and gas mixes. Oxygen gets a different
fitting than Compressed Breathing Air, which gets different fittings
than Argon, Nitrogen, CO2.. etc.

The only way this could have happened is if 1) the oxygen tanks were
mis-filled with air at the vendor (an adapter would have been needed) or
2) someone adapted an air bottle to an oxygen fitting.

When the threads or the nipple dont line up properly, its a big red flag.

On Nov 15, 7:05 pm, Airbus wrote:
A bit O.T. :
I read an accident report a few years back - an FBO in Europe re-filled an
O2 bottle with compressed air. In the ensuing high-altitude flight, the
pilot lost conciousness and the airplane crashed in the mountains. A
passenger, miraculously, survived and confirmed the cause of the crash due
to the pilot's unconciousness.

What I've wondered ever since I read it :
What would the FBO be doing with compressed air in the first place, and how
could this confusion occur? What *could* they have been thinking?

They use compressed air to drive all their tools in the shop.

-Robert

A bit O.T. :
I read an accident report a few years back - an FBO in Europe re-filled an
O2 bottle with compressed air. In the ensuing high-altitude flight, the
pilot lost conciousness and the airplane crashed in the mountains. A
passenger, miraculously, survived and confirmed the cause of the crash due
to the pilot's unconciousness.

What I've wondered ever since I read it :
What would the FBO be doing with compressed air in the first place, and how
could this confusion occur? What *could* they have been thinking?