can you run 2 pistons of one solenoid legally?

[Curt Henderson]

Another issue to consider is that the cylinders will extend and retract in a staggard pattern due to only one cylinder moving at a time due to imbalance if the air pressure in the system which will move the cylinder with the least amount of resistance first. If they are hooked to a rigid enough structure that affect will be minimal, but in a flexible(less rigid) structure it could get bound up and not move after the first cylinder extends.