What Parts that aren't in the kit can we use?

[FRC2669_Valery]

can we use any parts we want that aren't in the kit, or are there any limitations?

for example can we use servo valve in our pneumatics system?

[MrForbes]

The rules

http://usfirst.org/roboticsprograms/frc/content.aspx?id=452

talk about that in section 8 The Robot.

There are specific rules about what servo valves you can use, they cannot be too big (pipe fitting size and flow rate).