Used CO2 Tank - What to look for?

[Jeff]

I found a used CO2 tank on Craig's list. From the photo it looks like it is a 5 lb tank and has a dual pressure regulator. I think I remember reading that the tanks are inspected and should have a date stamp, is this correct? What should I look for on the regulator?

They are asking $75 for the tank and regulator which seems like a good deal.

[vance71975]

I found a used CO2 tank on Craig's list. From the photo it looks like it is a 5 lb tank and has a dual pressure regulator. I think I remember reading that the tanks are inspected and should have a date stamp, is this correct? What should I look for on the regulator?

They are asking $75 for the tank and regulator which seems like a good deal.

the regulator alone is worth that if its a good one.You may need to have the tank tested which is like 26 bucks or so, but other than that its a good deal.

[Beaver-Brew]

There will be a date stamped towards the top of the tank. Is it every five years that tey need to be tested?

[nelstrodomus]

Tank require hydrostatic testing every 5 years, do not buy a CO2 tank that exceeds the five you testing period, it's not worth it.

I would definetly reccomend buying used when it comes to tanks, simply because most industrial/welding gas supply stores will swap your tank anyway (unless you want to wait to have it sent out and returned).

I bought a 5 lb steely a while back and waited until they swapped it out with an aluminum one, booya! Now I'll just go to the other gas place that fills them on the spot. ;)

[Jeff]

Are aluminum tanks superior to steel?

[beerking]

They are MUCH lighter and therefore easier to move/carry.

[nelstrodomus]

They will not rust as well...no rings on the bottom of your fridge.

[corkybstewart]

Mine sit on the garage floor. I figure the humidity inside the fridge isn't good for the regulator, plus I can keep a better eye on the gauges. I had an issue with an older regulator drifting. I set it at 12 and a few days later it might be at 16 or higher. Not to mention tanks with regulators take up a lot of valuable real estate inside a fridge.
As far as the tanks go unless you plan on moving the tank often I'd recommend just getting one that can easily be swapped. Let the gas company pay for the hydro-testing.
I just got a 50# tank through my company. It cost $20 to fill and should last for years. That one will be for my kegerator. I also have a 5# tank and a 2# tank that I use whenever I take a keg to a party.

[Mill Rat]

Look for a second tank. If you only have one tank it will run out on a Friday afternoon mere minutes after the only place in town that refills it has closed, and you're hosting a party that evening.