Help needed: Toilet Filling Slowly (hissing)

[roger_moore]

Hi all complete newbie and non-plumber so seeking help

The Last couple of weeks the en-suite toilet has been filling really slowly (10-15mins)

had a look inside and it looks like this



The pipe up on the left (water in) at the top of that has what looks like a filter with a tube coming down (plastic bag like material) where the water comes down to fill the cistern. But its not coming down there its dribbling out of the plastic arm with the float on it which is why its taking ages, Ive taken the arm off removed the rubber (looks fine) cleaned it all anyway, took the filter thing off on top, turned the water on (with a cup over the top) a few times to flush any dirt out. But the same thing happens,
I turn the water on its fills the cistern up correctly (fast and how it should) but when i flush it reverts to dribbling back out the plastic arm (hissing)
Do i need a new part? even though it looks fine?

Thanks in Advance

 

[kay-jay]

yep, get a new inlet valve they are cheap and easy to install!

KJ

 

[yorkieplumber]

agree with kj new valve, not worth messing with present one.

 

[WHPES]

Get a Fluidmaster inlet valve from Screwfix. I reckon they are the best.

If I were you I would probably buy the kit with the flush valve as well. The ones in the picture you posted with the cable thingy are rubbish and it won't be long before that goes too so might as well change at the same time.

 

[roger_moore]

is that the whole unit that fits to the bottom of the cistern? does it screw in and do i need to seal it in? dont want to disconnect the other one then create a leak before having the correct equipment

 

[kay-jay]

use a bit of silicone around the seals! even if you replace the flush valve as well its still pretty straightforward you just have to remove the cistern from the pan and undo the backnut. before you start tho ensure your wingnuts under the cistern aren't all rusty and corroded or you may find that you can't undo them, in which case you need to cut them off with one of these
Toolstation > Hand Tools > Saws > Close Quarter Hacksaw
the frame on a standard hacksaw prevents access of the blade to the nut so use the above,
discard the blade that comes with it and fit a longer 300mm one. make sure you have a good few spare blades too, last one i did i snapped 7 'unbreakable' blades.


KJ

 

[yorkieplumber]

Kay-jay why remove cistern, valve can be replaced without removing cistern from pan, unless its a back to wall pan, then granted you have to remove cistern, but his picture above shows standard pan and cistern, why make work for yourself?

 

[kay-jay]

yorkie...
how ya gonna get to the backnut on the flush outlet valve without removing the cistern? when it sits in the recess in the pan with donut washer.

p.s toilet looks close coupled and not low level to me.


KJ

 

[fuzzy]

close cupled cistern surely needs removing to replace the syphon? get a new one, job done

 

[yorkieplumber]

new inlet valve required, not syphon, i know cistern has to be removed to replace syphon on close coupled wc, but its the inlet valve or ballvalve that wants replacing so no need to move cistern from wc

 

[yorkieplumber]

Inlet valve Kay Jay not flush outlet.

 

[fuzzy]

oh i see, of course u are right

 

[yorkieplumber]

Kay Jay its you that recommended inlet valve, then you are now saying outlet valve, i know the difference and how to replace both parts,
your second post suggested inlet valve.

 

[kay-jay]

yeah yorkie but lower down he was asking about replacing the flush valve as well as per whpes's advice in a previous post.
just crossed wires.....

KJ

 

[H2ODAN]

There is a black rubber diaphram which proberbly has a small pin size hole in. I aradited mine at home and it fixed it.