It's an ordinary ball valve. Obviously made of PVC, probably sch. 40.
Please read before you ask a stupid question like that again.

Great job on the gun. What does it shoot? HA HA HA HA HA

Great gun, can't wait to see the damage that thing does. It looks like it would weigh a lot having a welding tank as a chamber.

That's what I thought, but I also thought about how many times I was wrong about something like that to. Thanks anyways.

Yeah, it's just a ball valve screwed on to the breech loader. I don't use the breech loader because I think it's easier to shove whatever I'm shooting down the end of the barrel with a broomstick. Was that 400 yards or 400 feet? That would be 400 yards. Yes, I can open the valve fast enough to prope...

Woah, that thing is powerful. Could you comare the size of the bottle to something, because this sounds like something I will have to build myself.


And could someone point me to a good site so I can figure out how a burst disk works? I'm having hell even finding a site about burst disks work.

Oh, and I'm going to try to have a video up tomorrow.

Naaa, I didn't do any reasearch at all, just found a style that I liked and was simple and built it to put it short.

I'm very proud of my cannon because its my first ever that I completely built myself and nothing is wrong with it.

A few pics of my fisrt pneumatic.

What does everyone think about 2 four foot long air chambers along with a 7-8 foot barrel?

I'm building a pneumatic cannon able to shoot coke bottles/cans over 100 yards. Im having a very hard time figuring out what size barrel to get that would shoot fairly accurately and about how big the air chamber needs to be. Any suggestion would be very much appreciated.

I actually picked this name because my friend and I were having a spudzooka war one day and I took a shot well, in the guts. I cant give anyone a real specific spot because my whole belly was swollen for the next week or so. Out of experience, I can say never get caught up in a spudzooka war. Especi...