Is it more dangerous to pressurize Hydrogen AND Oxygen together, than just Hydrogen alone?

Question

This is probably a dumb question. H2 will not explode without oxygen, so it's only dangerous when it's outside of a tank. But if H2 and O2 are pressurized together, they're obviously flammable. But will compressing them alone be enough to cause an explosion inside a low pressure tank? Thank you for bearing with me :)

Answer 1

My opinion is It would be Extremely Dangerous.
the auto-ignition point of hydrogen is 571 C or 1060 F as long as there are NO SPARKS and does not reach anywhere near this temp then you should be ok
BUT
what you are creating is probably as dangerous as a bomb.
Be careful have a blast screen around it and do not compress much of the mixture.
I personally would compress the 2 gasses separately if I need it to burn afterwords just mix them carefully.

Answer 2

H2 and O2 pressurized together will indeed cause an explosion. In particular, this could happen if a pressure regulator valve previously used for oxygen were connected to a hydrogen tank. And vice versa. It gets worse. There are two kinds of pressurized nitrogen: Water-pumped and oil-pumped. If oxygen valves are fitted to oil-pumped nitrogen cylinders, an explosion could result. That is why there is right-handed and left-handed service. Valves for oxygen and water-pumped nitrogen are right-handed. Valves for oil pumped nitrogen are left-handed. A person cannot screw the valve of one onto the tank of the other.