Can You Use Speedfit Pipes With Strange Danfoss 10mm Olives?

Joined
16 May 2009
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Dorset
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I've just fitted a new towel rail, and connected 10mm Speedfit pipe to the valves.

The Danfoss Trv and lock shield came with strange olives, with a big groove in them. The pipe to lock shield joint sealed straight away, but the pipe to TRV joint just won't stop weeping.

As I tightened the nuts on these olives, the nut went loose, so I kept going until it was tight. No matter how much I tighten the TRV nut, it wont seal. I can't keep tightening or I'll break something!

Are these strange olives OK on plastic pipe? A friend suggested putting LSX on the olive, will this work?

Before you ask, yes I used pipe inserts ;)
 
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