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