Shower compression joint problem

[ChrisJLW]

Hiya, I'm fitting our shower and have discovered that one of the pipes has got a small dink just where the olive for the fitting will be. It leaked like crazy when I assembled & tested it.

Any thoughts on how I can sort this out? Would a coating of Fernox LSX on the inside of the olive be enough to close up the gap? Could I put a bit of solder on there & smooth it out? Or is there some gizmo I could get to remove the dink?

Ripping everything out to replace the pipe would be problematic.

 

[dilalio]

Try ptfe tape around the olive.
Say 10 wraps. Add more if needed.
Or a swaging tool might work if used gently.

 

[ChrisJLW]

Cheers dilalio, I don't think I will be able to get any ptfe round it when the fitting is screwed to the wall.

I had a go with my swaging tool and it doesn't go deep enough.

 

[HERTS P&D]

Ptfe and paste should sort that out.

And even a copper olive.

Andy

 

[dilalio]

Cheers dilalio, I don't think I will be able to get any ptfe round it when the fitting is screwed to the wall.

I had a go with my swaging tool and it doesn't go deep enough.

Where's the backnut?
That should be behind the olive!

Slide olive off, put backnut on, slide olive on, wrap ptfe around it and push it back into the nut and then shower valve on and tighten... Like packing a stopcock stuffing gland!

 

[dilalio]

Ptfe and paste should sort that out.

And even a copper olive.

Andy

Yeah... defo a copper olive too.
Good shout mate x

 

[dilalio]

Had similar issue with a rad tail pipe.

Left CH pump circulating cleaner around a system, over the weekend, on my current boiler install - boiler not in yet - Kamco magnetic filter in its place.

I'd changed all the TRVs and lockshields to 18 rads.

Customer messaged me at 4:30am Saturday morning to say water coming down kitchen wall... FFS!

Went there at 6:30 to investigate.

Rad tail in bathroom above was bent down, tight against boxing and water trickling down the back where it couldn't be seen!

Tried nipping up backnut... No joy!
Took it all apart and found a nick in the pipe, possibly from olive cutters!
The old lockshield valve's olive covered the nick so it didn't leak... The new lockshield valve didn't!

Bloody plumbing!

 

[ChrisJLW]

Cheers chaps,

I left the back nut/bracket off for a better pic of the dink.
I will give it a shot with your suggestions.

 

[dilalio]

Cheers dilalio, I don't think I will be able to get any ptfe round it when the fitting is screwed to the wall.

Ptfe around the "olive" to fatten it up!
Not around the male threads of the compression fitting which is the mistake all diyers seem to make!

 

[Madrab]

Presume that's wet board? If it wasn't then a bit of soldering could have been used to fill that depression and then sanded back smooth and round. Any way into it from the back?

 

[dilalio]

Cheers chaps,

I left the back nut/bracket off for a better pic of the dink.
I will give it a shot with your suggestions.
View attachment 386922

Add some paste too!
It only needs to stop leaking.
Don't strangle it to death.
Tape and paste fills a lot of tiny gaps.

 

[ChrisJLW]

Madras, aye it's PVC wetboard on an outside wall, so the pipes are buried.

 

[dilalio]

Presume that's wet board? If it wasn't then a bit of soldering could have been used to fill that depression and then sanded back smooth and round. Any way into it from the back?

Don't think it's necessary mate.
Ptfe should sort that easily... Christ the number of mullered rad tails that have been graunched to death... Tape sorts it every time x

 

[ChrisJLW]

Cheers dilalio, will go & grab some jointing paste to add to my collection.

I have a leaky rad valve to change in the same bathroom, bloody tilers broke it.

 

[dilalio]

Cheers chaps,

I left the back nut/bracket off for a better pic of the dink.
I will give it a shot with your suggestions.
View attachment 386922

Wrap the olive and push it back into the nut with a small flat head... As said... Like packing a stuffing gland!

Locktite 55 would be what I'd use on that!