Yes, it helps a lot. Also I looked at that catalog too and it didn't have anything about the model i have. It is 43a-aaa-rfej-0bl and it says on it's label 5 vdc and 4.7 watts.

http://macvalves.com/valves/4-way-valves/43-series/

I have a mac 5v 4.7w 4 way soleniod. i have been trying to control it with the arduino uno for the past hour and a half. Can somebody help me out on how to do this? I'll appreciate it very much. I know it sounds retarded to use arduino to control a solenoid but it is part of something i am working on. I'm fairly new to electrical engineering.