ISTR that my FiL's had the internally ridged tube, but there was a "socket" bonded on to one end of each tube, and joins were made just by pushing a length of tube into that socket. No adhesive used.
Apollo 1.
Big difference between a room full of 100% O2 and a tube full of O2 in a room full of air. I'm perhaps pretty sure that there's been a mention of a flame arrester in the gas line.
Tim
Sure. It's not likely to burn the house down. But if you do get a problem, and the hose catches it's likely to burn quite fiercely. Unless you have the correct plastic, in which case it won't burn at all.
Andy
I don't get it. The OP mentions an oxygen concentrator. Therefore the overall oxygen level within the same room will stay the same and not increase.
Oxygen will rapidly mix/diffuse with the rest of the (oxygen depleted) air to make it back to near normal air again. Oxygen generators produce little oxygen. Even a dustbin sized one will only produce 5 litres per minute.
Have you any idea of the supply rate of oxygen?
There is also the on/off switch.
This one is a small cabinet on wheels about two feet tall and can be set to deliver from zero to 5L per minute. It has a mains failure alarm.
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