[DonRotolo]

Of course, they also make double-solenoid valves that allow for mid-stroke stops, without the need for single and double solenoids controlling a single cylinder.

The truth, however, is that pneumatic pistons are really only good for all the way in and all the way out. It's possible to do mid-stroke positioning, but it doesn't work well, especially if the load on the piston is large (more than 5% of rated force) or variable.

Don