O2 cylinder exchange/filling

[Narked@50]

I have a couple of 9.4L, 137 bar O2 cylinders (one full, one empty, approx 1300 litres each) used for supplying oxygen to people at home, max flow 4L/min, not quick, but far better than none. I also have the constant flow O2 valve/mask etc for using it and was consider selling it, but I want to make sure anyone who may buy it can get more O2 if required.

I know these cylinders are normaly exchanged at chemists under prescription at quite a low cost and therefor never need testing as they are exchanged for another cylinder, but how do you get them filled without a prescription? They are a different fitting to diving O2 as they are designed for the medical type of constant flow regulator so they cannot be filled at a dive shop.

Any Ideas??
James

[David Wallace]

Originally Posted by narkedat50

I have a couple of 9.4L, 137 bar O2 cylinders (one full, one empty, approx 1300 litres each) used for supplying oxygen to people at home, max flow 4L/min, not quick, but far better than none. I also have the constant flow O2 valve/mask etc for using it and was consider selling it, but I want to make sure anyone who may buy it can get more O2 if required.

I know these cylinders are normaly exchanged at chemists under prescription at quite a low cost and therefor never need testing as they are exchanged for another cylinder, but how do you get them filled without a prescription? They are a different fitting to diving O2 as they are designed for the medical type of constant flow regulator so they cannot be filled at a dive shop.

Any Ideas??
James

Find a dive shop with a pin index to din adaptor
Ocean View....01243 601000

[beanie]

Originally Posted by Skipper

Find a dive shop with a pin index to din adaptor
Ocean View....01243 601000

not if there've got no return valves

and are they not bullnose anyway
medical O2 dosn't need to be pin index

[David Wallace]

Originally Posted by beanie

not if there've got no return valves

and are they not bullnose anyway
medical O2 dosn't need to be pin index

hmm ok let me revise this one...........

The cylinders which have been very loosley described as the sort which are perscribed and exchanged at the chemists........ could be that same as the ones which my wife "perscribes" on a daily basis. If they are, they can be filled with a pin index to female DIN adaptor which would the fit a std din filling whip.

They could of course be something completly different, for example, have a non return valve preventing you from filling them, or have a bullnose (unusual except is storage size O2 cylinders) fitting. In the case of Bullnose .... well thats just another adaptor There is another fitting which I cant remember the name of, but again, its just aan adaptor which Den has in stock

British Oxygen used to supply a system within the marinox tube which had a non return valve and had to exchanged by BO when empty. This system is I'm informed no longer in general use but BO do offer a "modernisation" upgrade for those systems

My apologies for the short andd incomplete original post, I hope this detail is more acceptable


best wishes

[Narked@50]

Here are a couple of pictures of them, the valve has a DIN "looking" thread that screws verticaly into the cylinder. As I am not familiar with these, perhaps someone can tell if they can indead be filled with a DIN adapter, but what about testing then??

The part of the valve on the actual cylinder facing forward takes a hex key which turnes in on and off.

James

[Narked@50]

Just bought a proper diving O2 kit as this is better than nothing but not as flash! Any other ideas on this one?

James

[beanie]

Originally Posted by narkedat50

Here are a couple of pictures of them, the valve has a DIN "looking" thread that screws verticaly into the cylinder. As I am not familiar with these, perhaps someone can tell if they can indead be filled with a DIN adapter, but what about testing then??

The part of the valve on the actual cylinder facing forward takes a hex key which turnes in on and off.

James

the valves are bullnose
if you look down the hole if theres a cross at the bottom - that's a non return valve and they can't be filled easily (you can filll them you just need to rebuild the valves first to take out the non return valve)