Burst disk question

[)DEMON(]

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

[jackssmirkingrevenge]

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...

[Insomniac]

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

[lukemc]

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

[MrCrowley]

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

[lukemc]

oh so they have to unscrew it every shot

[WOW!!]

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.

[matti]

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

[)DEMON(]

Thanks! some good data

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

[A-98]

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.