PVC air cannons are great, and everyone should build one of these at some point in their life, but what really makes this build exceptional is the valve. [Ben] created a piston valve for this ...

This means that either valve X OR Y can be pressed to make the piston go positive. Pneumatic OR circuit This type of circuit is used to allow a machine to be turned off from different positions.

Instead of trying to make an air-tight piston, he added a rubber membrane and a clever valve system to create a diaphragm air engine. This GIF is worth 115 words A round rubber diaphragm with a ...

Prepare equations required to determine an actuator (i.e. pneumatic, hydraulic, or electric) size based on piston or effective diaphragm area and spring characteristics. This subcommittee will address ...