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help please

Posted: Wed May 02, 2007 12:30 am
by jon_89
i just built a copper burst disk gun. all of it is .5in. does anybody know how to get a air tight seal at the union?

Posted: Wed May 02, 2007 1:10 am
by hi
this helps alot.

Image

seriously, it does, i hade the same problem with my hybrid.

ohh, this helps too.

Image

it may sound like im being sarcastic, but it truly does help.

Posted: Wed May 02, 2007 1:11 am
by jon_89
i already tried both

Posted: Wed May 02, 2007 1:14 am
by hi
then you have a defective union. check the inner ring, is it dented at all?

another thing is that your burst disk might be to thick.

Posted: Wed May 02, 2007 6:59 pm
by noname
Put a gasket on each side of the burst disc. Metal unions leak like hell by themselves, it's just life.

Posted: Wed May 02, 2007 7:04 pm
by iknowmy3tables
it could also be because of how you set the burst disk, you can goop up the parts teflon tape can't reach