Don't underestimate the rubbish dump...

[Ragnarok]

You could also determine difference between the volume the whole tank takes up and the inside volume.

That'd be quite a lot more work to be honest, because you'd need a pretty accurate internal volume measurement, which would take a lot of time and effort to pull off properly.

[jackssmirkingrevenge]

You could also determine difference between the volume the whole tank takes up and the inside volume.

That'd be quite a lot more work to be honest, because you'd need a pretty accurate internal volume measurement, which would take a lot of time and effort to pull off properly.

Or you could just look for a pressure rating.

I'm just saying it's not 1cm thick. That would make it ridiculously overengineered for its purpose, and if you wanted a high safety factor, a pop-off valve would be an infinitely cheaper and more practical option.

[inonickname]

You could also determine difference between the volume the whole tank takes up and the inside volume.

That'd be quite a lot more work to be honest, because you'd need a pretty accurate internal volume measurement, which would take a lot of time and effort to pull off properly.

Or you could just look for a pressure rating.

I'm just saying it's not 1cm thick. That would make it ridiculously overengineered for its purpose, and if you wanted a high safety factor, a pop-off valve would be an infinitely cheaper and more practical option.

You're most likely correct..I'll get a measurement with digital calipers next time I'm down the shed.

Though in all honesty, a fridge compressor won't phase it in the slightest.

Will edit in the thickness, going to check it now.

Edit: just checked it, It's around .45 cm thick. Still, It wouldn't phase me to use it as a pressure chamber for a fridge compressor at all. It withstood 250 psi hydrotesting (no leaks either), would have put more into it but without pulling out a shock pump or getting a fridge compressor I wasn't able to..

[psycix]

You should hydro-test it higher.
Note that it is always good to have a safety margin between your highest hydro test and the working pressure.