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Xringer · 10-05-09, 09:28 PM

When I look at a flare connection, I'm wondering what would be the best
way to test for a leak.?. A vacuum inside the tubing or pressure inside the line-set tubing?

With the shape of outer skirt of the flare, it seems like a vacuum would hold the tube tighter onto the tapered connector.

Whereas 200 PSI of nitrogen inside the line-set would be trying to force
the copper tube off the connector. (kinda like a one-way-valve).

And, nitrogen & 200 PSI gauges are cheap and easy to find.
If it held for a few days, that seems like it would be a pretty good test.

Comments please..

Thanks,
Rich

10-05-09, 09:28 PM	#16
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Leak test When I look at a flare connection, I'm wondering what would be the best way to test for a leak.?. A vacuum inside the tubing or pressure inside the line-set tubing? With the shape of outer skirt of the flare, it seems like a vacuum would hold the tube tighter onto the tapered connector. Whereas 200 PSI of nitrogen inside the line-set would be trying to force the copper tube off the connector. (kinda like a one-way-valve). And, nitrogen & 200 PSI gauges are cheap and easy to find. If it held for a few days, that seems like it would be a pretty good test. Comments please.. Thanks, Rich