leaking towel rail

[sclement]

Hi All

We have recently renovated our bathroom, and the plumber removed the new towel rail so I could decorate behind. I am having a little trouble refitting it and not getting it to leak.

The fitting is a sort of compression type with a rubber o-ring. Pictures of both ends of joint below.

I am using PTFE on the thread, but cannot seem to get it to stop weeping. Should I change the o-rings, or use something like lsx to help seal it. Advice would be much appreciated,

thanks

Simon

 

[terryplumb]

You may have overtightened the joint/s and damaged the "O" rings. If so replace o rings ,and check the leak isnt from above where it threads into the rad.

 

[sclement]

thanks, I wondered if that might be the case. I did not spot the o-rings originally, so did tighten quite a lot, will get new ones tomorrow. The leak is from above where is threads in the rad

 

[terryplumb]

So its the valve tail that threads into the rad thats leaking ?? Is that joint as it was when plumber removed the rad ,or have you fitted new ones ? If so you probably have not applied enough tight wraps , in the correct rotation ,of ptfe tape.

 

[sclement]

Hi, yes that is how the plumber left it. I think I applied PTFE in the correct rotation, i used 7 turns.
The nut attaches from the top to the thread which is on the bottom when fitted. The leak is coming from the top the nut.

 

[terryplumb]

I think we are talking at cross purposes. The big nut that screws directly onto the valve does not need ptfe tape. The O ring makes the seal. The thread that you cant see ,as it is inside the rad ,above the big nut is sealed with ptfe.

 

[sclement]

Sorry, I think we might have been at cross purposes. I think I have found the cause of the leak though. There is damage on the o-ring. Will replace tomorrow, and tighten gently this time