Olives

[Mike44]

i'm in the prosess of replacing all my radiator valves
And just wondered how tight to tighten the nut which squashes the olive
And will it help if I wrap ptf tape around the olive
Thx

 

[DP]

I never PTFE the olive. Once the capnut is tight (say one turn of capnut), undo the union and check the olive. Olive would be secure on the tube.

I never use bosswhite or other sealants.

 

[Charnwood]

From the Conex Technical Brochure:

In both cases, tightening of the capnut is effected by hand
as far as possible, followed by the recommended minimum
number of turns (refer to Table D*) with a suitable spanner.
Tools with serrated jaws should not be used. A few drops
of light oil applied to the screw thread before tightening
the nut will reduce the load required to reach the number
of turns.

*Table D:
View media item 36077Normal copper is half hard.

 

[Beerlover]

From the Conex Technical Brochure:

Typical shopkeeps remark, only time you've held a spanner is putting in a carrier bag saying "thankyou,please call again"

 

[Charnwood]

What is your method of doing a compression joint?
Tighten until the olive screams for mercy?

 

[Charnwood]

Oh, and we don't sell spanners.

We do have to deal with a lot of them, though. Mostly employed by the 'nationals'.

 

[hansthebear]

hand tight then half a turn-ish, jet blue on the small bit of pipe after the olive

 

[gasservice85]

tighten it until water doesnt come out anymore

 

[bengasman]

hand tight then half a turn-ish, jet blue on the small bit of pipe after the olive

That's the one.