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Old 05-10-2011, 05:29 PM   #1
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Default New CO2 cylinder

Does a brand new CO2 cylinder need to be purged with CO2 on first fill?

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Old 05-10-2011, 05:43 PM   #2
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don't really understand your question...when you bring it in to get filled, they fill it, you pay...that's all i've worried about!

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Old 05-10-2011, 10:41 PM   #3
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I understand the question. I believe you're asking this because when you buy a brand new propane tank and have it filled, they do some little purge test thing, mainly I think to purge air and moisture inside the tank.

I don't think they do that with CO2 maybe because its non-flammable?

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Old 05-11-2011, 01:05 AM   #4
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They do not purge the tank. Unlike the propane example CO2 is not a gas in the tank but a liquid.

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Old 05-11-2011, 01:07 AM   #5
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Propane is also a liquid when stored under pressure in a tank.

A good shop will pull a vacuum on a completely empty tank before filling it with gas (CO2, Ar, He, N2, etc).

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