Oxygen Regulator For Welding Tank

  • Item #P21
  • Price: $39.99
  • Part #
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In stock, will ship on Saturday, September 25

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This Brewer's Edge product fits standard 3/16" interior diameter fish tank tubing on its hose barb outlet, and has a CGA 540 input (which fits virtually all oxygen welding tanks).  It dispenses from 1/32 to 4 liters per minute of welding oxygen, and for most 5 and 10 gallon home brewing uses, you will set it at 1/8 to 1 liter per minute. Purchase a full or exchange oxygen welding tank with a CGA 540 valve at any welding supply. The advantage of welding oxygen is cost - you can aerate about 300 five gallon batches of wort with one standard 20 cubic foot tank refill.  Not for life support or welding use.

 Buy this and our 22" Aeration Wand and make your own oxygen aerating system. Or if you already have our Oxygen Aeration System, this regulator will fit the tubing so you can upgrade with nothing else to buy (except for a full welding oxygen tank). Also available is an optional 3/8" hose barb, see picture at right.


Average rating 8.82352941176471 out of 10 ( based on 17 reviews )

High Quality

Review by Ethan Fox on 1/26/2014

Extremely high quality - works perfectly. After 2 batches of excellent fermentation, I highly recommend this item - especially when combined with the 22" aeration wand (.5 micron version). ONLY issue I had with this item is that it didn't come with an O2 washer and CO2 washers don't work. Still haven't bothered to drive to the store to buy one, I just wrapped teflon tape around the threads for a QUICK fix which I haven't replaced yet. Just be sure go get a washer with it. Everything else about the item is solid.

Works for a while, then clogs at most flow settings

Review by Jon on 5/12/2014

I have used this regulator about 6 or 7 times. The last time I aerated, it would only pass O2 on the highest settings (3 and 4L/min). At any of the lower settings, no O2 would pass. Just to make sure it wasn't the line or stone causing the blockage, I removed those and attached a clean length of tubing and set the end in a glass of water. I turned on the tank valve and started moving the flow rate dial upward, stopping for several seconds at each stop. There was not a single bubble emerging from the tubing at any of the flow settings until I turned it to 3L/min. There is plenty of O2 in the cylinder--about 1800 PSI. I'll be generous and give this 2 stars, as it is minimally useful for its intended purpose. But it would be nice to have the dial-a-flow feature working. William's Brewing Responds: We need to hear from you. Please email service@williamsbrewing.com or call us at 800-759-6025 and we will take care of this. Thank you!

UPDATE of my previous review

Review by Kevin on 5/21/2014

For some reason I was not able to edit my previous post, so I will update it here... After contacting William's by email, they told me they would ship out another regulator, and not to worry about sending the old one back. Two days later I received the new regulator via 2-day priority mail! The new regulator works great, and I am quite impressed with the level of customer focus of William's. They went the extra mile!

Needs washer

Review by Thomas on 5/22/2014

Yes like another reviewer said, darned thing needs a washer. This should come in the package as without the washer, the customer needs do drive to stores looking for one which adds to the cost after they spend time and gas.

I like it

Review by Alex on 7/6/2014

So far so good. You don't need a washer, use Teflon tape on the threads and tighten with a wrench. No leaks at all. The plastic tube that you use for the wand will fit on this. Make sure you get the tube with 3/16 ID, it seems like it won't fit on the regulator but use some might. Also if you get an O2 tank from Harbor Frieght this won't fit on it. But, when you exchange it at the welding supply store the new valves will fit. Bring the regulator to test it on the new bottle to make sure!

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Sep 03, 2020 by Norman Lane

Q: Regarding the internal O-ring, is it likely that that is something I can fix?

A: Yes, they can be taken apart and the large O ring cleaned and examined for tears. See this video for more: https://www.youtube.com/watch?v=-zVSJ7ROn9k&t=11s

Sep 01, 2020 by Norman Lane

Q: I have had one of these for years and like it but it seems like it wastes a lot of oxygen. I normally turn the tank valve on for just a second and the gas will flow out of the stone for 30 seconds or so. But the whole time, gas is also flowing out of a small vent hole near the barb. Is this normal?

A: That is not normal. It sounds like an internal O ring seal has failed.

Feb 20, 2019 by John

Q: I'd like to connect the discharge from this regulator to a standard 5/16" I.D. vinyl gas tubing. What's the best way to do this? Thanks.

A: We have a 3/8" hose barb for this regulator but not a 5/16". This would be something you would have to fabricate.

Nov 18, 2018 by Bill Dean

Q: should this have a washer or o-ring for a proper seal?

A: No, this is a metal to metal seal. Make sure there are no burrs on the oxygen valve on your tank, and shut off the oxygen with the tank valve between uses.

Jun 20, 2018 by Kevin

Q: Hi, would this work with the common 1.4oz red oxygen cylinders found at hardware stores?

A: No, for the 1.4 oz. cylinders you would need our item Q11

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