"Punisher valve"-Need help

[Torch]

I have finished my first cannon and after messin around with it for a few hours I cant get it to work! The back of the diaphram valve just has a cleanout with a blowgun on it. Do I need a valve/sprinkler valve for it to work right?? Will try to get pics. Also I just finished adding some more primer/glue on the fittings so that might do it..

[Atlantis]

What's not working about it? Is the air going out the barrel?

[Torch]

Yeah, I did the valve like it said to on the "How to" forum.

[Atlantis]

Are you sure the barrel is far enough back? It might not be seating against the diaphraghm.

[Torch]

Its in 1/4th of the cleanout plug threads.

[Atlantis]

It's should be perfectly flush with the threads I believe. Maybe it's bending the diaphraghm before it even fires. Can somebody who's built one help him out.

P.S. 600th Post!

[Torch]

As I thought, its the valve...I will need to remake it. Thanks for the input.

[SpudStuff]

Just extend the barrel with a coupler

[noname]

Get some pics up and I'll work it out. Don't take it apart yet.

[Torch]

Well..Just found an old camera, will try and get a pic. Might take a while, thanks for the help!

[noname]

I am used to working diaphragms, but you must know a lot to use one on your first cannon. You'll learn how to fix all the problems and stuff. You could also draw up a picture of how it's messed up on Paint.

[Torch]

Cannon pics Yeah, i've been reasearching this type of valve for a while.

EDIT: fixed url

[noname]

God that thing is huge! Did you put your schrader/disconnect behind the diaphragm? If not, there's your problem. And if your only going to use a blowgun to suck the diaphragm back, it won't work. Blowguns are just too small.

[Torch]

Yeah, its behind. I am going to fix it sometime and convert it to a piston. And will prob order a sprinkler valve since I cant find one around here. Thanks for the help

[noname]

I don't see why your diaphragm wouldn't work. I didn't see anything wrong with it. Try running it with a compressor. Sometimes my diaphragms don't seal until like 30 psi so I have to pump hard and fast for the beginning. Jeez, with that humungo thing you'd be pumping for like 20 minutes.