This will be my first attempt to build a neumatic luancher, I see some use sprinkler valves and some use what looks like gas grill valves. Can someone send me a detailed drawing of how to use a sprinkler valve set up with a air gun for the trigger?. I am going to try to make a simple cannon to get the basics down then move on to something bigger (like a trailer towed cannon). Also what is the max psi for PVC type 40?. Thanks for any help........
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