I'm in the US, so £2 is 3-4 USD and since inner tubes are free and a nipple or bushing is ~$1 i think i'll stick with that. and in the US we ddon'thave readily available metric compression fittings. we still use that silly english system. i suppose it sshouldbe renamed the american system since we ...

great idea, i'll have to try that. I'm all set on schraders for now, but i'll remember that when i need one. i'm not sure the solder would work so well, everyone thats tried it seems to have broken the schrader in some way. you might try epoxy, or my personal favorite, CA glue. I use CA glue to put...

If you are having trouble getting hold of schrader valves with standard threads, I've noted that the ordinary valves found on bike inner-tubes fit very neatly in 8 mm compression fittings- those that screw tight with a brass olive. If in place of 8 mm copper tube, you use the schrader valve, it give...

If you are worried about something happening that isn't supposed to happen (like a valve or regulator freezing open) then the usuall solution is to include one or more pop-off valves (safety release valves) in the chamber. If the pipe is rated at say 200 PSIG then a 150 PSIG pop-off would be a good...

I am thinking ABS because the consensus seems to be that it will deform and rupture in the event of failure, where PVC will fragment and shred me.

I should probably clarify, I'm not actually proposing deliberately filling a reservoir to that kind of pressure; I'm simply trying to assess the danger in the event that it was accidentally over-pressurised.

Given that liquid CO2 has a vapour pressure of about 830 PSI, about 55 atmospheres; if I have a compressed gas reservoir with a volume not significantly greater than 160 ml (10 ci), or any reservoir volume less than this figure, and it were to be exposed directly to an unregulated 16g (0.56 oz) CO2 ...