SpudFiles

What is the average psi an aluminium burst disk, from a soda can, bursts at?

I don't think it will rupture at the sort of pressures used in typical pneumatics, as far as I know people usually use layers of aluminum foil for burst disks. Unless of course you score it with radial lines...

It all depends on the size of the disk. A large disk will hold less pressure than a really small disk.

how do people replace burst disks each time? i know how they work from the forums but it dosent say how people change them

They use a Union. Search it in google for a picture i don't feel like linking you now as my internet is bloody slow.....thats what you get for downloading 12movies at the same time

oh so they have to unscrew it every shot

Yep they do. And on mine I use 15 layers of foil, works good. And with it you can score it in a X pattern on the can. Might need a hybrid to get though it.

i use 2layers of soda can in 50mm union an it takes about 90psi to burst...seat of the burst disc is 42mm!

Thanks! some good data

I tried using foil but it was too frustrating and I ended up ripping my burst disk into peices

i find that the average burst pressure of normal aluminum foil in a 3/4" union is ~15 psi. i use the industrial aluminum foil (about 1.5 times as thick) and that bursts at about 25 psi in the same union.