Thanks I found this
Single Solenoid came in previous Kits and is marked as model # VPLE18-M5H-4/2-1/4
Festo Solenoid Valve Assembly (Adobe PDF, 41 KB)
http://www.team358.org/files/pneumatic/
On some of these special order valves the wiring does not follow the standard directions (use terminals 1 & 2). If your valve doesn't work when power is applied, then switch your positive wire from terminal 2 to terminal 3 (use terminals 1 & 3).