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qev gun help?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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qev gun help?

Unread postAuthor: nicholasht » Mon Apr 04, 2011 6:11 am

well I've started to make my air gun with a qev valve, but i don't know how to join all the materials together. i need to know how to join copper piping onto a brass fitting. do i weld it on or solder it on or something else? also i'm gluing an o ring onto the barrel where the piston pushes against and was wondering what glue to use cos its not sticking at the moment and i use epoxy glue but maybe not enough? thank you.
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Unread postAuthor: jackssmirkingrevenge » Mon Apr 04, 2011 6:49 am

Image

Compression fittings are the standard solution, but with proper epoxy you have more options ;)
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Unread postAuthor: mark.f » Mon Apr 04, 2011 7:07 am

Brass to copper joints can be made using flux and plumbing solder. Ask somebody who knows how already to show you how to do it, and then practice on a few joints before building a gun.
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Unread postAuthor: nicholasht » Mon Apr 04, 2011 7:08 am

thank you very much
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