10 Liters is most manufacturer's recommended maximum
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Why would you need to do that anyway? If you need the concentrated O2 that a mask provides, then a nasal cannula is not affective.
Wear a cannula so that it causes a minimum of discomfort. The nasal cannula is a small piece of plastic tubing that is attached to a larger tube which, in turn, connects to the oxygen container. The cannula has two small prongs that are inserted into the nostrils. If the prongs are curved, they should point downward inside the nostrils.
The highest liter flow rate of oxygen that should be administered via nasal cannula is 6 liters per minute. Beyond this flow rate, the cannula may not effectively deliver the intended oxygen concentration to the patient, and a different oxygen delivery system may be more appropriate.
The cost of a nasal cannula can vary depending on the brand, supplier, and quantity purchased. On average, a nasal cannula can range from $1 to $5 per piece. It is recommended to check with different suppliers or medical equipment stores for specific pricing.
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Nasal Cannula
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Perforation of the nasal septum as a result of using a nasal cannula and non-humidified oxygen has been reported.
The nasal cannula is lightweight, comfortable, and easy to use, making it preferred by patients. It delivers a low to moderate concentration of oxygen suitable for most cases. Additionally, the nasal cannula allows patients to talk, eat, and move around more freely compared to other oxygen delivery devices.
The nasal cannela was invented in the year 1949 by Wilfred jones. His employer patented it at that time and several different versions derive from the cannula contraption.