Oxygen regulator with built-in flow control
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An oxygen regulator with built-in flow control (Blichmann model shown in picture) includes a dial that allows you to set the exact rate of flow from the refillable oxygen tank. Models meant for brewing are best as the flow rate adjustment range is tuned to allow finer control at the low end where we need it (typically 1 litre per minute). For example, the Blichmann model has presets for 0.1, 0.25, 0.5, 0.75, 1, 1.5, 2, 4, and 7 litres per minute. Most industrial or medical oxygen regulators are designed for higher flow rates (up to 15-25 litres per minute) and may have presets that are not as accurate at the low end.
Make sure to purchase a regulator that matches your oxygen tank. Refillable oxygen tanks use either CGA-540 (industrial/commercial) or CGA-870 (medical/home health) fittings, while disposable oxygen tanks use CGA-601.
For more information see our Aerating / Oxygenating Wort guide.
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