Tank storage while FULL?

[copter53]

How long can I keep a tank sitting in my garage filled to 3000 psi? Is it bad? If I know I'm not going to dive for like 4 months but I already refilled them out of habit do I bleed them out or is it fine to leave them full and sitting? Will the air go bad? Can I use them again after?

 

[toddthecat]

Leave them full and use the air in the later. They'll be fine (as will the air).

 

[spectrum]

It's all good. I commonly keep fills over the winter.

Pete

 

[Tug]

Like the others said, they'll be fine. I often have filled tanks sitting around for months when weather doesn't cooperate and I don't want to dump expensive fills.


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[chrpai]

So where do *you* draw the line?

For example on the Austin Craigslist page there is a guy selling an 1987 Luxfer AL100 that hasn't had a Hydro/VIP+ in 26 months and has been full (3300psi) the whole time.(http://austin.craigslist.org/spo/3965098588.html)

I tried to be polite and suggest he drain it down to slight positive pressure but he just went off on me about how he used to own a dives shop and that he's so smart and I'm just a stupid recreational diver...

I was able to figure out who he is and all I can say is.... well, I guess it can't do much harm to a single wide.

 

[Tug]

I've had one of my suit inflation tanks filled for well over a year (probably closer to two years) and still continue to use it regularly.

 

[elan]

I had 32 sitting in my 108s for almost a year. Analyzed the content and checked the gas for any smell. Dove them with no issues. But I feel them at a trusted source where they are anal about air quality. If you do not know where the gas came from better drain it.

 

[Tug]

I had 32 sitting in my 108s for almost a year. Analyzed the content and checked the gas for any smell. Dove them with no issues. But I feel them at a trusted source where they are anal about air quality. If you do not know where the gas came from better drain it.

I agree, if you know and trust where the gas came from, I'd have no issues. However, if I had tank filled somewhere that I don't know or use regulary I might drain the tank and pop the valve out to take a quick peek.

 

[Bob DBF]

I'm in the leave them till you need them. As for sitting in your garage, I assume you have them secured so they are incapable of being knocked over.



Bob
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I may be old, but I'm not dead yet.

 

[spectrum]

So where do *you* draw the line?

For example on the Austin Craigslist page there is a guy selling an 1987 Luxfer AL100 that hasn't had a Hydro/VIP+ in 26 months and has been full (3300psi) the whole time.

I tried to be polite and suggest he drain it down to slight positive pressure but he just went off on me about how he used to own a dives shop and that he's so smart and I'm just a stupid recreational diver...

I was able to figure out who he is and all I can say is.... well, I guess it can't do much harm to a single wide.

From what I know sustained load cracking is a strictly aluminum phenomenon so that's the first line I would draw.

If the cylinder was 6351 like the guy on Craigslist I'd probably not carry it full through the off season.

My 2 6061 aluminum's and pony's winter as is so I guess I don't worry about them either but I do expect to cycle them at least annually.

Pete