3 burst discs in a row!?

[idive2]

I have Catalina Al80's and the screw the holds the burst disks in place has the vent holes at 90 degrees to each other. I was told that this was done so that if a disk blows while diving, the explosive force of the venting action won't spin the diver in circles. It makes sense to me. Is it true ?

I've been told this as well, it dispurses the air in a less direct way minimizing
the directional effect of the escaping air. Even so though when they go they
definitely create a disturbance. I would think that as the pressure lowers through
the course of a dive a burst disk problem would be less likely, increasing pressure
however during a fill or sitting in the hot sun is where I would think most failures would occur.

 

[Nemrod]

Your pressure equations are good but nonetheless it is entirely possible to fill an aluminumtank to 3,000 psi within a reasonable time frame for a walk-in customer and have him go out the door with a tank that will read 3,000 psi when he hooks up.

Our shop had a water bath that circulated cool water and I filled in stages. I don't really care what they do now or why they dry fill or any of that because it is --well---never mind. All I know and care is that I expect my tanks filled to a resonable level within a reasonable time frame. N