Inlet feed into cistern dripping

[kevin24]

i have just replacd my attic cistern ballcock,float valve

The inlet is a copper 90 degree pipe with a nut that pulls against a circular shoulder ring. I believe it's called a bent tap connector. This pipe goes into the threaded part of the ballcock inlet and the nut tightened, When I took it off there
is no sign of a washer or similar - the joint was 'sealed' only with white tape with the circular shoulder up against the chamfer inside the threaded part.

I removed the original tape and applied new but I cannot get a 100% water tight seal. Can anyone advise whether there should be a washer in this assembly? should I just tighten further (easiest option) apply more tape and retighten or replace with something else.

The tank already has an inline isolation valve so disconnecting is straight forward
Thanks
Kevin

 

[stardanny]

You need to get fibre tap connector washer.

http://www.screwfix.com/p/arctic-products-prestex-tap-connector-washers-red-pack-of-5/1109j

Daniel.

 

[kevin24]

Thanks

If I use one of these washers I guess I don't need any tape at all?


Kevin

 

[stardanny]

No. I don't use tape at all. You can if you want

Daniel

 

[dilalio]

The fibre washer swells when it's been wetted so you might have to give the backnut an extra nip up when you've test flushed several times. Buy a few of them as they are usually not reuseable and it's handy to have a few spares for future use!