Creating a Pneumatic Piston System with Small Pistons and an Air Tank Control

[432123533]

I need to create a simple piston system with small pistons connected to a 20oz kind of tank so that when I push a button/switch it pushes out and then can return when i switch it back. Does anyone have any advice on where/how to do so with a air tank-control and set of two small pistons etc.

 

[Danger]

Is there a question in there somewhere?

 

[mooktank]

You'd need to make sure energy doesn't leave the system if you don't want to have a compressor in there somewhere.

You can find air actuators and valves at Mcmaster-carr.