I found this big propane tank in the woods near my house, kind of like this one: http://www.cadvision.com/blanchas/54...reservoir.html How much PSI do you think they can take? The person in that article only used it at like 90 PSI but I wanted to use it for like 250PSI. Would that be safe? It's not really rusted through, just some surface rust. Thanks -Mike89GTA

Nothing wrong with that setup.

I've used them for many years as air tanks on mobile repair trucks but I don't know why you want to put so much air pressure in one. All air tools should be used with a maximum of 120 PSI. All automotive shops only have a max of 120 PSI in their air systems also.

Propane tanks have a safe rating of about 230 psi.

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The compressor/tank setup I use keeps about 250 PSI in the tank, but regulates the pressure to a max of 120.. It just means you can go for longer intervals without the compressor turning back on. But then, the compressor stays on longer generally. hehe

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The tank can take it, but 250 is about max. Make certain the tank is in good condition. Sand blast the entire tank and repaint it. Make sure it has very little rust pitting and that none of the pitting is deep. Otherwise you could blow a hole in the tank. If the tank still has all the integrity it did when it was new then you are fine.

Unless you know for sure it's rated for 250 or more psi I would not put over 125 in it, I've seen air tanks blow up and it's not a pretty sight!!!

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Man I can't think of a single reason you would want so much psi less' your airing up the space shuttle tires.

I agree on the big tank, it would be a nice setup for running air tools, sandblasters, etc.

The problem on smaller tanks is even though you can develop 100 to 125 psi with them the small gallonage makes it hard for them to keep up.

Our bodyshop uses an 80 gallon tank and we don't have a single item that uses over 125 psi. My 6 horse 30 gallon at home struggles a bit to keep up when blasting at 80 to 100 psi and the second you use an airtool it kicks on and can't spin many of them.