ideas for a 3/4" chamber

victorjung · Tue Nov 22, 2011 3:50 am

Hi guys, since today i always used aluminium bottle as chamber in my pneumatic canon like this one: http://www.francismountain.com/boutique ... 2550-z.jpg
But it's not a erfect 3/4" npt so it 's not perfect proof and now i want something perfectly proof so i need a chamber with a real 3/4" connection. or a 1" i could use a reducer. so do you have any idea? something in metal will be more appreciated!

pneumaticcannons · Tue Nov 22, 2011 4:06 am

Sorry, I don't quite understand what you mean by "perfectly proof". You were trying to say perfectly right? Could you Please spesify... Darn language barrier

victorjung · Tue Nov 22, 2011 4:12 am

yeah i'm sorry for my poor english. But yes perfectly proof mean that the under pressure air in the chamber stay in it. so perfectly proof means proof !

cannon monkey · Tue Nov 22, 2011 5:07 am

im still confused bout the perfectly proof but why not use iron pipes? just saying

Crna Legija · Tue Nov 22, 2011 5:10 am

Perfectly air proof or air tight is how you should say it. If you use epoxy you can defiantly get it to hold air, that's how i did it for my fire extinguisher. You can also use pipe and fittings sold in hardware stores

victorjung · Tue Nov 22, 2011 6:14 am

Pipes are heavy and don't offer big volume... What's the size of the thread in an extinguisher? is it all the time the same?

microman171 · Tue Nov 22, 2011 6:33 am

I would suggest a 3/4" pipe nipple, and then you cover the thread in epoxy, and screw the pipe nipple in.