I got that valve for copper tubing I posted about before -- thanks for
the advice and leads on that -- and it has a compression fitting at
Does anyone flare the tubing enough so that the compression ring and
the nut don't come off the tube? Or does that end up making it too
big to get into the seat?
And is it true what one web page says that the compression ring can be
used only once???
"You can not remove a compression ring from tubing once it has been
used. If you can't get a leakproof connection, the tubing behind the
ring will have to be cut, and a new ring installed. Though the
compression nuts can often be reused, I would recommend against it
because the old nut may be slightly deformed and lessen the quality of
the new connection."
Is any of this true? I"ve reused the compession ring on the
humidifier at least 6 times, every time I've removed the tubing from
it. The connection has never leaked.
Does the tubing flare when you tighten the nut and does the tubing
have to be cut to remove the ring, just to replace it? Isn't that
good, that way the ring doesn't fall off!
Do they even sell rings separately?
Do people really use a new nut when they reconnect??
One url says use plumber's grease for the nuts but the other pages
don't say a thing about that. Do you use it?
Can the tubing really be "severed by the compression sleeve" if the
nut is tightened too much, like another page says.
Do you use "thread seal tape"? One page said not to and the other
page said the opposite!