Burst disc for HP tanks

[DiverDan]

Derrick,

Your burst disk should be rated for 5/3 the working pressure of your tank. For example, if you have a 3000psi aluminum, the burst disk should be rated for 5000psi. This is also the hydro pressure of the tank.

And DRE the disks are not put on the valves for your inconvenience, in fact you should not have to even worry about them. The reason for having a burst disk on the tank is to prevent the tank from exploding under extraordinary conditions, such as, a fire or other extreme heat conditions. Fire fighters do not appreciate grenades going off when they are fighting a fire. Check out PSI, Inc. at they have great stats on tank explosions. And by the way, the way for the o-ring to fail is if the valve is ejected with your ss shims in it which were not able to relieve the increased pressure.

Dan