Editing Compression fitting (section)

==Disadvantages==
Compression fittings are not as robust as soldered fittings.  They are typically used in applications where the fitting will not be disturbed and not subjected to flexing or bending. A [[Soldering#Pipe soldering|soldered joint]] is highly tolerant of flexing and bending (such as when pipes knock or shake from sudden pressure changes e.g. caused by [[water hammer]]).  Compression fittings are much more sensitive to these type of dynamic stresses. They are also bulkier, and may be considered less aesthetically pleasing than a neatly soldered joint. Compression fittings work best when tightened once and not disturbed.{{Contradictory inline|date=August 2021}} Some compression connectors may never be reused, such as a ferrule ring type. It can never be reused once they have been compressed. This connector is directly placed over the pipe and the nut is tightened compressing the ferrule between the pipe and the body of the fitting. Compression of this ferrule also results in deformation of the copper tubing. If a compression type connection needs to be redone, more often than not the compressed copper/ferrule would need to be cut off and a new ferrule is to be used on a clean non-compressed piece of pipe end. This is to assure a leak proof sound connection.