Alright we got everything working, we ended up using a 1/2" ball valve with 1/2 ID tubing. Right now there is a small leak where the barb is but we are working on fixing that. And we test launched it with a small amount of pressure from a bike pump but don't know what pressure we were at due to the ...

I don't know what pressures we are using, we are just experiementing as of now, I wouldn't imagine more than 100psi. With the design of our gun (we have it set up on a cart thing so it looks like an artillery piece), it would be strange to have it connected directly to the valve but we will do it ...

Ok i got almost everything figured out but one last thing now, do we use 1/4" vinyl tubing or 3/4"?

Ok so I am most likely going to get the ball valve. now the next part is confusing me, since the ball valve has two openings and then the valve what do I do? Like I tap into the diaphram with the barb and then using vinyl tubing to the ball valve correct? Do I need the ball valve to be capped on ...

oh ok. I thought the suggestion was using either a ball valve to a blow gun or a sprinkler valve to a blow gun. Ok I see what is being said now.

Ok i see how it works but since we will be having the ball valve to a blow gun is where I am confused now. So we have the barb going out of the valve and were do we put that on the valve and then connecting the valve to the blow gun? I know how to do it if it is just a blow gun but with two of the ...

alright. I still do not understand how this works still though, would you mind explaining exactly what the modification does and how we would set up the ball valve and blowgun combo thing?

Sorry for the questions.

Alright yea thats what I am talking about, sorry for not seeing that. And another question, i have heard that blow guns are bad for larger valves such as the one we are using. What should we use as a pilot valve?

Hello Everybody,

I attempted a search but could not find any information about what to do. yesterday my neighbor and myself finished out Pneumatic Tennis Ball launcher and attempted to fire it, on the first shot it just rolled out of the barrel and continued to do this every time we fired, so we ...