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Thomas Dudley Niagara Flush Valve Seal | 314574 Diaphragm Washer for Syphon Repair
£4.13
A genuine replacement rubber diaphragm seal for the maintenance and repair of Thomas Dudley Niagara dual-flush valves.
Thomas Dudley Niagara Flush Valve Seal | 314574 Diaphragm Washer for Syphon Repair
- This is the light grey, older version
- Possible solution for when water is trickling or running down the back of the pan (check first that this washer is the issue!)
- Flush valve base sealing washer
- For Thomas Dudley Niagara old style flush valves
- Also fits Dudley Vantage pneumatic flush valves (pre-2010 models)
- Flat design
- Rubber material
- Size: 64mm diameter (38mm centre)
The Thomas Dudley 314574 is a genuine replacement diaphragm washer designed specifically for the Niagara range of dual-flush valves. This high-quality rubber seal is the primary solution for fixing a toilet that leaks water into the bowl after flushing, often caused by a worn or perished original seal. By replacing the diaphragm, you restore the watertight seal at the base of the flush valve, ensuring efficient operation and preventing water wastage.
Brand:
- Thomas Dudley
MPN:
- 314574
Related
Collection from our store – Once purchased you will receive an email or call to confirm if your order is ready to be collected straight away or estimated date if we do not have some of the items in stock.
Delivery
Our warehouse ships orders Monday to Friday with a 14:00 cut off time for same day dispatch, any orders placed after 14:00 will be shipped the next working day. If for reason we do not have the goods in stock we will call.
Delivery to United Kingdom (Mainland)
Royal Mail 48 Tracked – Delivery 2 – 3 working days from dispatch
Royal Mail 24 Tracked – Delivery 1 working day from dispatch
DPD Next Day – Delivery guaranteed next working day with a 1hour time slot.
Collection from our store – Once purchased you will receive an email or call to confirm if your order is ready to be collected straight away or estimated date if we do not have some of the items in stock.
Delivery
Our warehouse ships orders Monday to Friday with a 14:00 cut off time for same day dispatch, any orders placed after 14:00 will be shipped the next working day. If for reason we do not have the goods in stock we will call.
Delivery to United Kingdom (Mainland)
Royal Mail 48 Tracked – Delivery 2 – 3 working days from dispatch
Royal Mail 24 Tracked – Delivery 1 working day from dispatch
DPD Next Day – Delivery guaranteed next working day with a 1hour time slot.









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