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.