How to Choose an Oxygen Tank Regulator
Before choosing an oxygen tank regulator, you need to know which oxygen tank you will use. Learn about acquiring an oxygen tank.
- About oxygen regulators
- Regulator anatomy
- The difference between 870, 540, and regulators for an oxygen concentrator
- The size of an oxygen tank doesn’t matter (it’s the fitting)
About Oxygen Regulators
Oxygen regulators affix onto an oxygen tank. In North America, there are two different kinds of oxygen tanks which require different regulators respectively. An oxygen regulator is necessary for using an oxygen tank and allows you to change the speed at which oxygen is dispensed, often called the “flow rate.”
Regulator Anatomy
- Knob for adjusting the flow rate
- Barb outlet where the oxygen comes out
- Body of the regulator
- Gauge for displaying oxygen pressure
- Connection point
Different Regulators
There are two main types in North America: the 870 and 540, which differ mainly in the fitting used to connect to the oxygen tank.
870 Regulator
870 and 540 are CGA (Compressed Gas Association) fitting standards stamped on the tank valve — match that number to your regulator; the fitting, not the tank size, is what matters.
540 Regulator
Regulator for Oxygen Concentrator (not recommended)
We don't recommend using an oxygen concentrator as they do not produce pure concentrations of oxygen, which can lead to potential contaminants.
