THANK you for your time to help with this video, I was afraid I would blow my house up, hubby came home from the hospital with a o2 tank We're still learning,

THANK YOU SO MUCH FOR THIS VIDEO, because the air kept leaking out , but I know how to change tank , so I found that the small round piece was not on neck , inside , I found the round piece on the old empty tank . So I THANK GOD FIRST , than you for showing me why the air kept leaking.

thanks for showing

I still don't understand how to tell if it's off

My tank had a different knob on top