toilet cistern won't fill up

[yabai]

Hi.

I noticed that after a flush it sounded like the cistern was filling up for a very long time. I looked in the cistern and water was entering the cistern via the anti-syhon fill valve but was esacping down the flush pipe.

I isolated the water to the toilet, took off the anti-shpon fill valve and gave it a clean. However, after re-connecting the same problem persists.

Some sites say I need a new anti-syhon fill valve but it didn't look broken to me. Does anyone know anything else I can try please?

I found a diagram that looks like my set-up.
http://www.diydoctor.org.uk/project_images/Pushbutton/cistern.jpg

Cheers

 

[seco services]

the rubber seal on the bottom maybe out of shape.
if you've tried cleaning it turn the seal over.
if it still fails then a new seal.

 

[yabai]

thanks for the quick reply. do you mean a seal on the bottom of the anti-syphon fill valve? if that doesn't work do you recommend a new fill valve or is there anything else to try?

many thanks

 

[seco services]

thanks for the quick reply. do you mean a seal on the bottom of the anti-syphon fill valve?

yes on the flush valve.
you have to know what make etc the valve is to get a seal.

if that doesn't work do you recommend a new fill valve or is there anything else to try?

no reason why it shouldn't work unless the valve is catching somewhere and not shutting i've never had to fit a complete valve for this reason unless anything has broke on the valve.

 

[yabai]

thank you very much for the advice. I will try to fix the flush valve tonight and, if required, replace this valve.

I'll let you know how I get on.


Thanks,
Mark

 

[yabai]

hi,

thank you for your advice. i can now see that it is the flush valve. i tried re-seating the seal but this does not work - the button lifts the flush valve but it does not drop down again to re-create the seal.

i will get a new flush valve unit and fit that and expect it to solve the problem. that will save me some money so thanks again.

 

[seco services]

have you tried it without the cable attached to the button if it's not shutting fully.
sometimes the cables can go stiff and not run free.