toilet slow to fill

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I have looked in the the other toilet, which fills up within 20 seconds,  the lid for some reason is glued or taped on at the back very strongly held, I will need to get a wooden lever under it.  But I can see through the push button hole the float valve is the same one by siamp and when it fills there is no thin jet of water out of the top I can't see where the water is filling from.  

I have never timed the fill time downstairs but I would guess 10 - 20 minutes.  

Something must be wrong downstairs. I will probably end up taking them both apart and comparing them.

Bendy_House

Just take apart the faulty one - leave the good one alone!

Some models can be removed without disturbing the actual part that goes through the cistern bottom and connects to the inlet pipe, so to replace the whole lot - apart from that inlet spigot - would be a two minute job. AND these are cheap.

Have another look at the installation instructions, and see if the vertical section is removable. If it is, there's your solution.

Then you can play with the old one to your heart's content

PZH

I had similar and it turned out that the Diaphragm washer had a very tiny hole in it (Almost invisible)

Think a replacement was a couple of pound and dead easy to fit

How to fix a slow filling or broken toilet - YouTube

Worth checking ?

plumb1_2

The 99b can be replaced without disconnecting it from the cistern.

Bendy_House

plumb1_2 said:

The 99b can be replaced without disconnecting it from the cistern.

Brilliant! There's your answer, multi-x. Just buy a new one, and swap the main part - no need to touch watery bits and joints. Peasy

plumb1_2

Bendy_House said:

plumb1_2 said:

The 99b can be replaced without disconnecting it from the cistern.

Brilliant! There's your answer, multi-x. Just buy a new one, and swap the main part - no need to touch watery bits and joints. Peasy

Yes just isolate the supply first. Unless your quick

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PZH said:

I had similar and it turned out that the Diaphragm washer had a very tiny hole in it (Almost invisible)

Think a replacement was a couple of pound and dead easy to fit

How to fix a slow filling or broken toilet - YouTube

Worth checking ?

Looks like a pretty good match.  I'll do it tomorrow. cheers.

Bendy_House

Promise you'll post photos if it all goes wrong