I made a tennis ball cannon using a 3” sprinkler valve. It fires a ball at ~150 yards at just 30 PSI. The valve is manufactured by Dorot, repackaged by Galcon, and sold by Drip Depot. The stated flow rate is 390 gallons/minute which is 10x the flow rate of an average 1” sprinkler valve. The valve is...

I wanted to showcase my 3D printed air tank and barrel. I made both by printing a thin shell followed by wrapping it in carbon fiber. I have it attached to a 2” modded sprinkler valve. The valve is rated for a 100 GPM flow rate. Barrel uses an interrupted screw breach to connect to the valve. It onl...