copper guns

[trae08]

hi im designing a new copper gun and i have a few questions. yes i searched the wiki but didnt find what i was looking for.

anyway im making a copper gun with a barrell sealing t valve all copper. my questions are,

what are all the types of copper? ive read about type m type l on some posts here but what are they for?

whats the best to join copper fittings? solder or the copper epoxy stuff?

and where would i get 2 inch copper fittings?


thanks in advance and someone with copper knowledge should make a how to on all the types and stuff...

[frankrede]

I heard that the copper epoxy paste works just as well, but I have never used it so I would ask a plumber

[SpudBlaster15]

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[trae08]

about what kinda of pressure would type k copper be able to handle?

[Hotwired]

The lowest operating pressures I've seen for copper pipe is for metric plumbing pipe.

Even then the largest common pipe - 54mm diameter - has a working pressure of 392psi. The burst pressure is a lot higher.

Imperial pipe has higher pressure ratings.

[Infernal Maveric]

I Don't know what the burst preasure or copper pipe is, but I have filled my copper guns up to 400PSI one many occasions, and nothing happened.

I prefer soldering the pipe rather than epoxy as in my eyes its safer, because it joins the metals together, I know epoxy does too, but its glue, but meh,

[trae08]

another question. i need a estimate on how much 2 inch type dwv pipe can hold. so anyone who's built a copper gun could you help me out? im not looking for the exact burst pressure just an idea...

and what would be the coolest looking copper gun? inline, over an under, coaxial etc.etc...

edit: i think im going to go with inline. ill use a brass valve with a modded diaphragm and blowgun.

[spudgunnerwryyyyy]

Ok on the subject of Epoxy. It is not really a glue. The bond epoxy make is much stronger than any "Glue".