what to do with all my steel 120's

Monkey

is it possible to put these things to good use by creating a small O2 fill station and stage 4 bottles together....??

Fill Express...is not open on sundays.... so getting full O2 fills is not easy some days....

I have low pressure 19's so I only need to boost from 1500 to 2400...

I could use another set to bank 21/35.....

I am trying not to have to invest 3 K in a booster pump ..... was just hopeing to get enough stuff to string them together with some fill whips.

thanks

BAM

diverreb

It will absolutely work for your purposes.... Just have a shop with an O2 Booster fill them to 3500 with O2 or as high as the shop is willing to go on O2. Some shops won't fill them that high but I believe Fill Express will.

There was a thread on fill pressures for O2 and I think the end result was there wasn't a problem filling O2 to that pressure as long as it's done S-l-o-w-l-y!

No real need to bank them together....Just transfill in order... from the lowest pressure to the highest.

I will also say that the mini boosters are very nice to have...

Richie

JS1scuba

Have your dive center fill your 120s to maximum fill pressure with:

100% oxygen
10/90 heliox
Air

Now comes the creative parts of mixing small cylinders.

With this kind of bank you can make most anything you need. As the heliox pressure drops, add air to make the volume. Decompression differences will be negligable.

For oxygen just fill to rated pressure, once you get to where you cannot get 1500 psi or more then get it refilled. Or transfill as much as you can into a 40 cuft bottle and top with air for a bail out gas.

If you use these cylinders for "bank" bottles you can then add a small Jetsam booster and you can get maximum advantage of the gas. But the gas is so cheap at this point all you need is a simple transfil whip and a TDL TekCheck oxygen/helium analyzer and you are golden!

Conisder getting some Alum 14s (2015 psi rates) or some LP-13s at 2400 psi as well.

Good luck

JDS

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diverreb

Joel's method will work and is a good idea if you vary your mixes. If, like me, you keep it simple and in your case, always use 21/35, it easier to bank 21/35 and not worry about what the mix is by blending down.

I use always use a 20/50 mix and it will cover anything I do up to 170', which is about my maximum planned depth limit for this year. I'm a newbie so I haven't been below 135' with the unit yet, but I plan to hit a few in the 160' range by the end of the season if all goes well.

Richie

ScubaDadMiami

Stop by my place when you are down this way next time. I can show you some things that I have done that will probably serve you well.

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Howard Packer
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