[Vo]:1200 degrees E-cat operating at 1 bar?

[Teslaalset]

Group,
Recent posted foto that seems to represent a test Rossi test unit
generating 1200 degrees C heat, made me wonder:
Is the new unit operating at 1 Bar gas pressure? It seems to be an open
setup to me.
Past explanation by Rossi gave me the impression the E-cat works at quite
higher gas pressures.
Is it just me than is puzzled about this observation?