toilet isolation valve prob

[vik2001]

i have a isolation valve on the feed for the toilet. underneath the valve where the nut meet the copper pipe feed, i notice a weeping leak, which is so slow. i have changged the valve etc. should i be putting ptfe tape around the olive??

its driving me mad, am i better of putting a speed fit isolation valve in.

 

[Rico99]

Hi Vik,

Just give the nut a nip up.

Failing that, then yes unscrew nut and wrap some ptfe around the olive.

Rico

 

[kevplumb]

spot of jointing compound smeared on the olive

 

[vik2001]

kev jointing compund, is that the LSX stuff for leak sealer which comes in a yellow tube??

 

[kevplumb]

will do the trick

 

[doitall]

Is the arrow facing towards the cistern, and are you sure it's not leaking from the center screw.

 

[vik2001]

i have both ptfe tape and the lsx stuff. if using ptfe tape how many times should i wrap it around, its 15 mm copper pipe on the end of the isolation valve??

also for the lsx stuff, if applying this do i have to let it dry for a hour before i tighten it up??

good point about the arrow... no leak in screw tho

 

[kevplumb]

3 or 4 turns of ptfe or smear of lsx and make the joint off

 

[vik2001]

for knowledge does any ptfe tape ever go on the thread of the isolation valve if tape is on the olive??

 

[doitall]

No just wrap two or three turns around the olive.

 

[vik2001]

so do u put ptfe on the olive when its sitting on the copper pipe or do u put it on the olive then place into the isolation valve and tighten?

 

[doitall]

put the nut and olive on the pipe first.

 

[vik2001]

great tip kev, i used the lsx compound /leak sealer around the olive and tightened back up, and hey presto no leak. im so happy,