In this video I build a high power air cannon using a PVC piston from my previous video (seen here): https://www.youtube.com/watch?v=BCZGWvieJ7I In case you're wondering how this cannon valve operates, I demonstrate the internal function at the 5:35 mark in this video. The sprinkler valve I use at the end of the video was modified as shown here: https://www.youtube.com/watch?v=ymfrrX5kIvM Check out my Patreon page and if you like my projects a contribution would be awesome! Link: https://www.patreon.com/NightHawkProjects Special thanks to my top Patrons! Syniurge, Matthew Leitzke, & TheBackyardScientist! Music: Sam Davies - Northern Lights (Original Mix) https://www.youtube.com/watch?v=h7BW2Oh7ZI0 (Provided by Silk Music) Thanks for watching!