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solder psi pressure?

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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solder psi pressure?

Unread postAuthor: spud-tom » Tue Sep 04, 2007 10:25 pm

If i get 2 pieces of copper pipe and put a s h i t load of solder properly to the joints, how much psi can it hold? maximum
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Unread postAuthor: hi » Tue Sep 04, 2007 10:30 pm

well ive taken ie to 135 with no leaks or problems of any kind. im sure it can take more than that thogh.
also, it isnt about putting a ton of solder on, its about doing a good job.
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Unread postAuthor: NoXi » Tue Sep 04, 2007 10:45 pm

ive takin it to 240 with no problems at all
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Unread postAuthor: SpudBlaster15 » Tue Sep 04, 2007 10:50 pm

A properly soldered joint should hold at least as much pressure as the pipe you are joining is rated to.
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Unread postAuthor: joannaardway » Wed Sep 05, 2007 7:58 am

Actually, too much solder just clogs up the internals of the joint, so it needs to be done sparingly.

With a properly cleaned and fluxed joint, done with a fairly powerful blowtorch (a pencil flame one will not produce as strong a joint), and done carefully, you should easily be able to put 300 psi behind joints up to about 1" in diameter.
Beyond that, you might still be able to do that pressure, but you'll really need a proper blowtorch for it.
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Unread postAuthor: jrrdw » Wed Sep 05, 2007 6:07 pm

joannaardway wrote:Actually, too much solder just clogs up the internals of the joint, so it needs to be done sparingly.

With a properly cleaned and fluxed joint, done with a fairly powerful blowtorch (a pencil flame one will not produce as strong a joint), and done carefully, you should easily be able to put 300 psi behind joints up to about 1" in diameter.
Beyond that, you might still be able to do that pressure, but you'll really need a proper blowtorch for it.


Well put Joanna.
Iv'e seen auto repair shops run copper air lines. Basicly 150psi for months on end, so it's long lasting also.
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Last edited by jrrdw on Thu Sep 06, 2007 5:48 pm, edited 1 time in total.
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Unread postAuthor: boilingleadbath » Thu Sep 06, 2007 4:46 pm

www.copper.org for everything you need to know about copper
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