sorry, the perfect example a little closer to home just occurred to me
an
acetylene generator
Acetylene pressure at the generator, in distribution lines and at the point of use
must not exceed 15 psi gauge pressure due to the possibility of an explosion
auto ignition via the
Adiabatic process can occur (like a fire piston) at pressure above that
you might also find
Adiabatic flame temperature another interesting portal to combustion
thermodynamics 