I was considering making a ball valve PVC air rifle or something of the sort using a PVC air canister and a hand pump, but I wanted to know about it, last year I made one that was air tight but air leaked out of the top of the pump which really annoyed me, I looked further onto the it and found out that there was a Bike Tyre valve, What does it do? Does it let air flow in but stop it from coming out? and where would I find some good designs as well as the items needed to make it? And don’t bother answering ‘Buy an air soft gun’ because Australia does not retail those.any big truck tire repair place they have tire valves that are like bunker fittings, that is to say a valve that has a threaded bottom end with nuts and rubber washers, you would drill the appropriate size hole in the pipe and put the valve through and tighten the nuts up against the washers making an air tight seal, that should work for you if they have them in au, good luck.

These bike tire valves are called schrader valves i got mine from a car repair shop where they like had them for free.

I mounted it into a pvc pipe by drilling a hole just big enough for the stem but there was a ball valve at the end that keeps it from falling out. Then to seal it you could you gorilla glue or epoxy to make it air tight.

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