u/TheUnderminer28

Hey everyone,

I'm trying to make a pressurized container (~12 psi above ambient air pressure) to store tennis balls in to stop them from depressurizing. My current setup is a 3 inch diameter PVC pipe with a cap on one end and a screw on cap on the other end. There is also a spot to pressurize it with a bike pump.

My issue is that it leaks air out past the threads. Right now I'm just using teflon tape and tightening it by hand. Is there a good way to make an airtight opening in PVC that I can unseal and reseal by hand?