Dudley Hydroflo Cistern Inlet Valve Diaphragm Washer — 319726
The Dudley 319726 is the authentic replacement diaphragm washer designed specifically for the Hydroflo range of inlet valves. This small but critical component is the most common fix for toilets that are slow to fill, noisy during operation, or won't stop running. Precision-molded to fit both side and bottom inlet versions, this genuine part restores the watertight seal and ensures quiet, efficient cistern refills.
Identification Guide:
MPN: 319726 | Compatibility: All Hydroflo Valves | Diameter: 28mm | Material: Reinforced Rubber
Key Features
- Universal Application: Suits all Thomas Dudley Hydroflo valves, commonly found in concealed and close-coupled cisterns.
- Genuine Quality: Manufactured by Thomas Dudley in the UK for a perfect seal and long-term durability.
- Standard Dimensions: 28mm diameter and 7mm depth for exact fitment within the valve head.
- Cost-Effective: Repairs the existing valve without the need for a full plumbing replacement.
Technical Note
Thomas Dudley may vary the color of the plastic insert (e.g., from white to red/grey) to denote manufacturing dates for warranty tracking. This change is purely cosmetic and does not affect the 319726's performance or compatibility. Always ensure the water supply is isolated before unscrewing the valve cap.