SpudFiles

im just curious to see if anyone has sucsessfully used a butterfly valve in a pnuematic cannon, andif you have im wondering how you rigged it up

mythbusers used it on the chicken gun
and it is a pumpkin cannon on here using a springloded butterfy:) (to lazy to find)

yah, iv been looking at them but there not threaded or slip, so im try to figure how to mount one , they are like these bolt on things haha sorry for the bad discription

i know what you mean.
if you are good to weld and makeing a steel gun you can use a pipe and a plate then cut a piece out of the plate the same diameter as your pipe then you weld the plate on the outside of your "output" and weld it on!

make some holes for the bolts and there you go

sorry bad english and stuff "it is night hear"

In other words does anyone know how to mount this fitting to a PVC chamber and barrel?

i don't know if it is possible

Nah no way without welding. just buy a sprinkler or make a piston.

With some basic plumbing knowledge, this question can easily be answered, and the answer is yes.

That butterfly valve of yours mounts on a 3" flange, which is a premade, commonly available version of what spudfarm was trying to describe. All you need to do is get a 3" iron/steel flange with threaded connections, and the right bolt circle diameter to connect it with. Then you just tighten the appropriate size of bolts through the holes on the flanges on each side, and screw that onto the PVC threads.

DYI wrote:With some basic plumbing knowledge, this question can easily be answered, and the answer is yes.

That butterfly valve of yours mounts on a 3" flange, which is a premade, commonly available version of what spudfarm was trying to describe. All you need to do is get a 3" iron/steel flange with threaded connections, and the right bolt circle diameter to connect it with. Then you just tighten the appropriate size of bolts through the holes on the flanges on each side, and screw that onto the PVC threads.

Well I just got owned...
damn

carlman that was the gun i thinked of
BUT it is steel i think

DYI wrote:All you need to do is get a 3" iron/steel flange with threaded connections, and the right bolt circle diameter to connect it with. Then you just tighten the appropriate size of bolts through the holes on the flanges on each side, and screw that onto the PVC threads.

They also make PVC flanges that could be directly solvent welded to the chamber.

I think that the steel bolts and knuts might wear on the PVC over time, and considering how cheap the flanges would be, I personally don't think it's worth the risk.