In article , "tom" wrote:

"desgnr" wrote in message
...
I put a new water valve in the refrigerator,Now when i put back the copper
supply it has a small leak at the fitting.
I cut the fitting off & installed a new compression ferrule & it still
leaks no matter how tight i make it.
Does it need teflon tape on the threads,it didn't have any before i
changed the valve.
How can i fix the leak ?

Try putting a liberal amount of pipe dope on\around the feral before
tightening.

To the OP: No, don't. You already got very good advice from "jamesgangnc".
To tom: don't answer questions when you don't know what you're talking about.