If your Thomas Dudley Hydroflo inlet valve won't shut off properly it could very well be that the diaphragm washer inside of the valve needs to be replaced. Many make the mistake of purchasing a full replacement inlet valve at the first sign of any issue, replacing just this washer may save you a lot time and money in the long-term. We advise purchasing a couple of these washers at a time so you've got one readily available in the event that the washer fails again in future.
Spare Diaphragm washer
Made in the UK
Replacement washer for the popular Hydroflo inlet valves
Hydroflo valves are installed in most TD cisterns
Technical specification
Width28 mmTypeInlet Float ValveMaterialRubberHeight14.50 mmFinishRubberColourBlackRange DescriptionSparesManufacturer Model No319726Brand NameThomas Dudley