Dallas wrote:


Something about the humidity being too high and freezing in the valve.


THIS IS PURE BS.

There is essentially NO moisture in the tank of medical oxygen - for the
same reasons there is no moisture in aviation or welders oxygen. Any
moisture or humidification in a medical stream is added at the point of
use, AFTER the flowmeter.

Any doctor, nurse, paramedic, EMT, respiratory therapist or gas vendor
can vouch for this.

Dave