Solenoid Valve Questions

I am representing team 4607, and we are using 3 extending pneumatic cylinders controlled by double solenoid valves. The problem is, we do not know much about double solenoid valves and need to order 3 of them. Does anybody know what kind to get and where to get them, or if we need to get ones to match our programming? Any help would be GREATLY appreciated.

Could you possibly specify the uses of your three cylinders, it could be possible that you do not need three double valves.

We are using our cylinders to extend, grab, and retract to climb the pyramid from underneath. And we want them to be able to work independently.

Simplify your life. Get a manifold and a few solenoid valves from Vex Robotics. It will greatly simplify your plumbing and wiring.