Originally Posted by paintball4848freak
like custom 24 said, i believe the 7500psi is test pressure (TP)
and if you look you can see FP 4500 aka (fill pressure)
all just a hunch tho
You're both right..When a tank is made, they purposely fill it as close to 8000 psi(I think) to ensure that it will pass DOT cert. The bottle is able to handle a much higher psi rating then the reg, in order to prevent the it from exploding if you overfill..Burst disk FTW.