Hey all i just have a question regarding the pressure differential in the different compartments of a solenoid valve (I'm experimenting with a new handgun and i'm investigating different valve types).

This is the current valve setup on my cannon (below)
http://img114.imageshack.us/img114/1097 ...

Thanks for all the replys guys, i'm going to give the copper pipe and conduit a try, see how it goes

Hi there this is my first post!! - I've been a great spud gun enthusiast for a long time (Australian Gun laws steer me towards making vs purchasing... its more satisfying anyway) The guns i tend to make are generally aimed at accuracy rather than raw power.

I've been looking towards using marbles ...