[NightHawkInLight] a.k.a. [Ben] recently built an awesome high power air cannon out of PVC pipe. PVC air cannons ... makes this build exceptional is the valve. [Ben] created a piston valve for ...

Outside each bed, the ¾-inch pipe is fitted with the aforementioned shutoff valve, and is then reduced for a ½-inch PVC pipe ...

YouTuber Micah Mobley explains the process of setting up his system. With a few 3/4-inch and 1/2-inch PVC pipes, a valve, a garden hose, and a few tools, you can have a full irrigation system set up.