The International Cessna 170 Association

Sometimes, as we amateurs work on our own equipment we take liberties we thing are simple procedures. Simple mechanical procedures can go very wrong. Here’s an example: A fellow decided to remove the defective valve from an oxygen cylinder. He thought it might be a simple thing to just Loosen the valve and let the oxygen slowly escape…then when it was all gone…the valve could be replaced.

Nope. Not that simple: https://www.youtube.com/watch?v=9lw_fhNAIQc&t=48s