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Old 04-16-2003, 04:40 PM   #1
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Air pressure tanks

Does anyone know the saftey valve pounds on a propane tank? I have a few of them and was thinking of making a air tank for filling tires, a few fittings and paint it silver with a blue band to match the AS.

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Old 04-20-2003, 08:40 PM   #2
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Air Tank

Check out


They have a conversion kit for 20 bucks.

Don't know anything about them, or the sagacity of such a conversion, but the kit sure would make things simple. On the other hand, a propane tank is certainly quite a bit heavier than other off the shelf portable air tanks.


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Old 04-20-2003, 11:14 PM   #3
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Propane tanks are tested to 250# FWIW.....Illegal to fill with anything else without changing the valve....but what the hell...geof
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Old 04-21-2003, 07:22 AM   #4
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You can convert an old Scuba tank for this and it's a lot smaller and it will fill a LOT more tires then a 20 gallon tank will. You charge them with CO2.
Here is a company that seels them ready made.
You can do the same thien with a soda fountain CO tank. I have several friends that have built these for use offroading. They can air up about 50 large floatation tires ( read as LOTS of volume) off a Fountain CO tank. My off road truck has some tank I built into it that hold about 8 gallons of water. There is a conversion for Air gallons at a certain PSI. I can't get two 35 inch tires from 20 psi back up to 32. The power tank would tak up 1/4 the physical space and do 50. This is the same style set ups pit crews for Nascar use but they use Nitrogen.
The tank is small enough that you might be able to tuck it behind the two propane tanks.
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Old 04-21-2003, 10:22 AM   #5
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I agree that the CO2 is the way to go. However it is (I'm told) easy to over inflate, so you got to forget about the feel of airing at the service station compressor. I don't know if you could blow a tire or not but there is alot of pressure.

The tanks being stronger and thicker are heavier but as toaster said , much smaller. Of course you don't want to even think of putting CO2 in a LP tank. Doubtful that you could find anyone to do it anyway.
Oh and you never want to place the tank in a position that the valve neck could be struck and knocked off, You would have a Scud missle on your hands if that happened and the thing could penetrate the walls of the Airstream or the tow vehicle or the house down the block with ease.
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