claphamsa

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Question... What would a good price be for a 50LB C02 tank be? I got my 5Lb one filled, and asked about the processes for filling it myself (assuming i got a bigger tank) and they said it would only equalize pressure if you hooked the two tanks up. How do you alls do it?

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BigKahuna

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http://www.homebrewtalk.com/f11/fill-your-own-dang-co2-bottle-75951/

having pointed you here, I'll warn you to buy the 50# bottle WITH a "dip Tube" or a "Siphon Tube"

You will end up with about 4# in your 5# bottle....but YOU get to fill it, so WHO CARES!

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Aleforge

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Nevermind - misread the OP!

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BigKahuna

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Like Everything, it's a bit investment.....Maybe $300 for a 50# Tank....but it's $30 to fill the 50# tank, and you can fill your 5# 10 times!

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flyweed

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just be careful. As an avid paintballer. I started filling my own and my friends CO2 tanks to save money. (before I switched over to nitro) anyway..you NEED AND MUST HAVE a good scale to weight your empty bottle, hit the TARE button to reset to 0 and then fill it(digital is best). Even then I think it's a bit dangerous. I had a c02 bottle burst on my before and it AIN'T fun.

So if you are gonna do it...do it right!

Dan

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BigKahuna

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I understand your concern, but if you don't have a pump, it's not going to matter. If you have 1# or 4 1/2# in a tank, you will have the same pressure. The only time this will be an issue, is if you over fill with a pump, and end up without enough head space in the tank. Even then, the over pressure disk in the valve should give way thousands of pounds of pressure before the tank gives way. Just as the OP said, We are just equalizing pressure here, that will prevent you from ever getting a "Full Fill" but with no pump you can not over fill the receiving tank.

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fezzman

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As a former paintballer and ref, I agree that a scale is best. Back in my 'outlaw' days I always did my own fills without a scale. I used to freeze the small bottle to maximize the fill and fill from my 20#...dangerous to do without a scale. I never had one blow which is surely due to luck. The only times I had discs rupture was as a ref filling at the field. The common practice was to do a quick fill, dump it to freeze the bottle, then fill the bottle full as it was hanging on a scale. In hind site I wonder if the freezing made the burst disc weak.

If you don't have a scale you are likely still relatively safe to fill so long as you don't freeze the small bottle and stop filling when you hear the flow slow down...NOT when the flow actually stops. On second thought, just invest in a scale and play it safe.

claphamsa

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Thanks all! and the big bottle was on 200$ bK

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I collect magnetic bottle openers... so if you see something nice......

BigKahuna

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I'll take another for that! Congrats.

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kirscp

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When I worked for our Ambulance service, we filled our own O2 bottles with 50lb tanks.

You can only equalize the pressure, 1800lbs in the 50 = 1800 into your other tank. You can not overfill unless you have a pump.

Filling small paintball tanks, would be different....