Dual flush toilet keeps filling

[achillea]

Hi

we have an old dual flush toilet which keeps filling. When you flush the loo the water empties from the cistern then stops running but comes out again as the cistern doesn't stop filling up when the ball cock rises. We have taken out the middle bit and looked at the seal but can't seem to find the problem. Since putting it back the cistern overfills again but only for about 30 seconds then stops. Clearly an improvement but not ideal - we are not plumbing savvy so any advice if this can be simply repaired would be great. Failing that I'll have to get a plumber in.

Here is a photo:




Many thanks

 

[WeeStu]

The fill valve( the component on the right) washer is passing. Turn off supply and replace washer, or purchase new fill valve and replace complete unit.

 

[galaxy_plumbing]

flush valve is working , its the filling valve which needs to be checked. water coming to toilet pan is the overflow. check if you have service valve somewhere near the toilet to shut the water. then you can try to unscrew that plastic nut you see on the beginning of the arm on the right, there is a rubber diaphragm and plastic orifice, check if there is no limescale which could cause valve not shutting properly. good luck

 

[achillea]

Many thanks for the advice - will give it a go and let you know how I get on.

cheers.

 

[galaxy_plumbing]

Many thanks for the advice - will give it a go and let you know how I get on.

cheers.

don't get wet 😀

 

[PlumbBobBob]

is it me or does the float look like it is at the top of it's adjustment

 

[galaxy_plumbing]

well spotted, could be.:wink_smile:

 

[dancinplumba]

Get a plumber in 🙂

 

[Guest123]

As Dancin says, get a plumber in. He'll have the parts to repair it/renew it in his stock, you'll get a warranty from him and it will save you in the long run as your own attempts at a repair may in fact make matters worse (and more expensive to repair).

 

[achillea]

Tried to get a replacement washer but after visiting 3 plumbers merchants none had it in stock or anything close to it. Ended up buying a complete new filling valve (Fluidmaster Float Valve for £10) - seems to have done the trick... fingers crossed!

Very pleased we have fixed it ourselves as have had a bad run of plumbers doing various jobs here in Tonbridge and have completely lost faith in the profession's ability to a) not rip us off b) do a quality job and c) take responsibility when its their fault things have gone wrong ...... (present company accepted of course!).

pip pip

 

[PlumbBobBob]

glad you got sorted in the end. you have a very good float valve there, should last you years.