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N8N

wrote:
I installed a new line... it's actually 2 lines with a connector. I
bought the 15' copper water line packages from Home Depot... so it's 30
feet now.
At first there was very little pressure to the fridge, so I went under
the house to inspect the line. It wasn't leaking, but upon moving the
copper piping just a little bit, one of the lines just popped out of
the nut that was attached to it.
(The copper lines in the packages have 2 different ends. On one end,
it's a little rounded off and has an indentation so you can slide the
nut over the end and it doesn't go past the indent. On the other end,
it's a straight cut off so you can slide the nut to wherever you want.)
Well for some reason, now the piping just pops off the nut whenever
there is water pressure. This is a problem with the rounded off ends
that have indentations... when you screw the nut in and add pressure,
the line pops off.
On the ends that have a straight cut, I slide the nut on a little
further then bend the very tip of the line so that it can't slide off
of the nut.
AND it's extremely difficult to make a perfectly flat cut to an end.
I've been trying to do all this while in the crawl space under my
house. Extremely frustrating and MUDDY!

This must sound confusing. Does anyone know what I'm talking about?
How do these copper lines with the sliding nuts work so that they don't
leak or pop out under pressure???

Thanks

Sounds like you are describing a compression fitting, there should be a
ferrule of some kind of soft yellow metal that you slip over the tubing
as well as a nut, is this not the case?

Alternately it could be a flare fitting in which case you would need to
flare the tubing for it to work correctly, although the flaring tool
would likely cost more than the tubing itself ($20-40 at your local
auto parts store)

good luck

nate