listen to MR T ALLEN. he knows his stuff and you don't yet.
to be doubly certain, either buy a 232bar dive tank and fill station, OR buy yourself a 4500psi tank for you marker.
do remember the pressure in car tyres is usually around 40psi. would you like one of those to explode in your face at approx 80psi?? then ask yourself what something blowing up at 60 times that pressure would be like.......................