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Old 04-27-2012, 03:58 AM   #1
twd000
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I'm still shopping for an oxygen system for my wort. The "regulators" for the disposable cylinders are now $20 - seems like too much for a simple valve. I think I would save money in the long run by getting a more permanent system, although I don't need a welding tank (220 cf or whatever they are)

So I found this listing on ebay:
http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_500wt_1202

Would this work for me? Do you get these cylinders refilled, or swap the empty for a full one? Do I need a prescription, or can I just explain what I plan to do with the oxygen?

 
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Old 04-27-2012, 04:09 AM   #2
coypoo
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I'm not 100% sure, but I think you'll need a prescription to get it filled
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Old 04-27-2012, 04:24 AM   #3
Snowhere
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Find a local welding supply place and see about buying/renting a smaller bottle from them. If you rent, you usually can just swap out cylinders. I own 4 of the large welding H tanks myself for glass art. So I always have plenty of O2 available.

 
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Old 04-27-2012, 04:25 AM   #4
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Depending on your location you may well indeed run into the prescription problem getting O2 for medical cylinders. Get a small welding o2 tank instead, you don't need 125cf, a 20cf will last forever if you're just aerating. And you can pick up used regulators on ebay for $10, good quality ones too.

 
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Old 04-27-2012, 04:26 AM   #5
twd000
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Quote:
Originally Posted by Snowhere View Post
Find a local welding supply place and see about buying/renting a smaller bottle from them. If you rent, you usually can just swap out cylinders. I own 4 of the large welding H tanks myself for glass art. So I always have plenty of O2 available.
Last time I talked to Airgas (about CO2, not oxygen) they told me they don't sell any cylinders, just swap empty ones for full ones. I've seen some empty welding bottles for sale on craigslist, but they're way too big for my needs

 
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Old 04-27-2012, 04:33 AM   #6
pelipen
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Oxygen is not a drug, but medical grade does have to meet certain purity restrictions, so not everyone may fill it. Just call up Airgas, or Prax, or the name on the bottle, and ask. This would have been part of their home care business. It's also possible they want their cylinder back.

 
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Old 04-27-2012, 11:38 AM   #7
Backporchbrewery
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You can also get smaller oxygen tanks from refrigeration supply shops.

 
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Old 04-27-2012, 02:26 PM   #8
twd000
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Quote:
Originally Posted by Backporchbrewery View Post
You can also get smaller oxygen tanks from refrigeration supply shops.
what kind of regulator do those tanks use?

 
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Old 04-27-2012, 02:30 PM   #9
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Quote:
Originally Posted by twd000 View Post
what kind of regulator do those tanks use?
They require a regulator with a CGA 540 fitting. And as to your earlier inquiry there is a prescription requirement to fill a medical O2 cylinder.

 
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Old 04-27-2012, 04:28 PM   #10
Bobby_M
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Harbor Freight also sells a small O2 tank.
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