3/2 pneumatic valve help

[Danjr1]

Afternoon all,
I'm designing a simple 10bar system and need a little help working out which ports are what on the following solenoid valve

http://www.ebay.co.uk/itm/3805306028...888%26_rdc%3D1

I'd be using bungee cord to return the piston so I'm hoping that the ports inline with each other could be used for the gas input and output, then the port on the side as exhaust. I'd obviously be using a 12v solenoid in place of this version.

Cheers

Dan