No water flow into cistern

[Alan from Aberdeen]

Hi
I have a Dudley vantage dual flush pneumatic Niagara flush valve system.
The cistern is not refilling after a flush. The system has never been good - refilling very very slowly but now not even doing this.
I can turn on /off the cold water tap on the bath which is situated next to the cistern and the water will start to fill the cistern albeit very slowly.
Any idea what could be wrong?.

 

[Knappers]

Diaphram in fill valve needs replacing probably 'siamp'.
Flush valve type has nothing directly to do with fill valve.
A pic will suffice to be able to identify the diaphram you'll need

 

[Ben-gee]

Inlet valve needs servicing/replacing, it is a Dudley Hydroflo in these - the design has changed slightly so that the float is now a shrouded one. The old ones suffer from the adjustable cork screw float arm going soft and bendy and not shutting off properly.

You may find the arm on yours is stuck up in the air and will fill if you knock it down- but it will keep happening so service/replace anyway.

 

[Alan from Aberdeen]

Diaphram in fill valve needs replacing probably 'siamp'.
Flush valve type has nothing directly to do with fill valve.
A pic will suffice to be able to identify the diaphram you'll need

If