Replaced loo fill valve but still dripping.

[Atgni]

Also the house is about 20 years old would I be needing the filler with the 3/8 stem or the 1/2, the viva comes in 2 options, one with just a 1/2 and for £5 more there is one that comes with both.
Thanks

 

[Atgni]

I have been sent a picture to see what is going on and I am waiting for a measurement of the tail thread

 

[Atgni]

So it looks like the new tail at 50mm will be longer and I need to cut it down. I understand the need to get it perfectly square so would I be better off buying the plastic version which will be easier to work with. Thanks

 

[CountryFan]

So it looks like the new tail at 50mm will be longer and I need to cut it down. I understand the need to get it perfectly square so would I be better off buying the plastic version which will be easier to work with. ThanksView attachment 400894

Or trim that copper bit down/alter the pipework?

 

[CountryFan]

Brilliant, thank you for your help

You're welcome

So fibre not rubber. I have these but are all fibre washers equal, these are a set from Aldi.
As I am going to the proper plumbing supplies place would I be better off buying a few "proper" ones

I would get some decent ones, no idea on Aldi ones as I've never used them. You may be able to use rubber, but we've only dealt with fibre and you used to be able to get Nylon ones

 

[Atgni]

You're welcome

I would get some decent ones, no idea on Aldi ones as I've never used them. You may be able to use rubber, but we've only dealt with fibre and you used to be able to get Nylon ones

Yes thanks I will be getting some proper fibre ones from the plumber merchants then

 

[Atgni]

Or trim that copper bit down/alter the pipework?

There is no way I am touching that push fit stuff I have no idea what it is and have never worked with it. Give me some compression or solder and I am away

 

[terryplumb]

Your measurement of the threaded tail doesn't include the thickness of the cistern or the seal inside the cistern.
You will very likely find that your new valve will fit without needing to cut it at all.
There will be a seal between the isolation valve and the threaded tail of the valve,and you will very likely need to fit a new one.

 

[Atgni]

Your measurement of the threaded tail doesn't include the thickness of the cistern or the seal inside the cistern.
You will very likely find that your new valve will fit without needing to cut it at all.
There will be a seal between the isolation valve and the threaded tail of the valve,and you will very likely need to fit a new one.

Thank you very much.
You have a good point. I will replace the fibre washer in the old isolation valve to tail.
My photo measurement shows about 30mm allowing for a bit inside the isolation valve nut.
The pdf drawing of the new valve tail is 50mm from the top of the rubber sealing cone, then it shows a gap -being the approx thickness of the cistern then the nylon washer. So yes thank you it looks like it will be about right. Fingers crossed

 

[Atgni]

One more thing I can't decide if I need the new valve that comes with both 1/2 Inch and 3/8 tails.
Looking at my picture do we think the copper pipe work is 10mm
Then that would make the old tail 15mm judging by eye as it's definitely bigger as the 3/8 tail is 10mm diameter according to the pdf.
Thanks.

 

[terryplumb]

The thread of the valve tail in your picture looks like 1/2inch BSP to me.
The 15mm measurement in the pdf drawing would appear to be nonsense, having never seen a float valve thread with a 15mm diameter, as it appears to depict.

 

[Atgni]

The thread of the valve tail in your picture looks like 1/2inch BSP to me.

Ok great thanks. I might just buy the version with the two sizes as I am not near the house to make a trip and then find the 1/2 won't fit.
It's a 20 year old house and that pipework looks like 10mm is it still likely to be 1/2 or some odd awkward size.

The 15mm measurement in the pdf drawing would appear to be nonsense, having never seen a float valve thread with a 15mm diameter, as it appears to depict.

Right, seems a bit of an odd measurement then.

 

[terryplumb]

The pipe size is irrelevant, only the thread of the float valve and the isolation valve needs to be the same.

 

[Atgni]

The pipe size is irrelevant, only the thread of the float valve and the isolation valve needs to be the same.

I see that's my confusion then 1/2 and 3/8 refer to the thread size not the actual width of the pipe. Oops

 

[terryplumb]

I see that's my confusion then 1/2 and 3/8 refer to the thread size not the actual width of the pipe. Oops

Correct ,and believe it or not 1/2 inch BSP thread is nowhere near 1/2 inch in diameter ( it's nearer 3/4 of an inch) !!