asalcedo wrote:

I am required to use compression fittings, with an existing compression
service valve separated by 5cm of free pipe from a 90 degree compression
fitting.

I would suggest that if the pipe is turning then you _may_ be
overtightening the fitting.

My most recent exploits with comp. fittings were sorted by the
application of a plumbers silicone sealer (Fernox LSX) around the olive
prior to assembly. It's holding out so far.

:¬)

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