But not [truebassB], instead he built his own air pump from first principles (YouTube, embedded below) using PVC pipe. It’s a straightforward ... A couple of ball check valves are used for ...

These valves continuously release air that could otherwise cause damaging pressure surges, resulting in increased power consumption, decreased flow and even inexplicable pipe ruptures ... for the air ...

[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 ...

Now that summer is in full swing, air conditioners are a necessity — and one YouTuber is showing the world how to build one that operates using solar energy for under $50. A video from YouTuber ...