For what its worth, I have had the valve in a 110g canister fail. Probably used it half a dozen times, and after the last time (still half full), it wouldn't close. Tried reattaching the stove to try and re-seat the valve, didn't work. Luckily I was at home, so I just set the can away from everything until it emptied itself. Not a huge deal, if I was camping I just would have left the stove attached (inconvenient, but would have saved the gas).
Yep. Like anything mechanical, they can fail. I had one stick open on me one time too. However, out of all the gas stoves I've used, I've had one and only one failure, and it wasn't on a canister I had refilled.
Putting it into perspective: Maybe I'll post photos some time, but I've had at least a dozen failures with pumps on white gas stoves, one of which resulted in a fire.
Gas stoves are WAY more mechanically reliable than liquid fueled stoves.
HJ
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