Either don't remove it, just wrap some ptfe tape around old olive and re-use old nut on new iso, or gently cross cut a groove in the olive and then stick a fine bladed screwdriver in and twist it, olive will snap and hey presto
RAWPLUMB
February 2010
if your changing isolation valve you don't need to remove the olive or nut.
hi-spec plumbing & heating (essex)
February 2010
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