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The Range£2.34Visit shop Thomas Dudley Diaphragm Washer For Siphon 4.1/2" Round - Ptosys367473 - Blue
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The Thomas Dudley Diaphragm Washer is an essential maintenance component for homeowners and professional plumbers looking to restore the functionality of their siphon-based flushing systems. Designed to create an airtight seal, this 4.1/2 inch round washer prevents leaks and ensures consistent flushing performance. While it is engineered for a precise fit, users must verify the diameter of their existing siphon mechanism to ensure compatibility before purchase.
| Model Part Number | Ptosys367473 |
|---|---|
| Brand | Thomas Dudley |
This washer is designed for 4.1/2 inch round applications. Measure your existing diaphragm diameter to confirm.
Generally, you only need basic tools to open the cistern and remove the siphon mechanism.
It is specifically designed for Thomas Dudley siphon systems. Compatibility with other brands is not guaranteed.
Yes, provided they are in good condition and not cross-threaded, they can typically be reused.
There is no fixed interval, but it should be replaced immediately if signs of wear or leakage occur.
Check that the washer is seated perfectly flat and that there is no debris preventing a full seal.
Ensure the diaphragm is properly secured to the siphon rod and that all connections are airtight.
To install, first isolate the water supply to the cistern and flush the toilet to empty the reservoir. Remove the cistern lid and carefully unscrew the siphon top or remove the siphon unit according to your specific model's requirements. Replace the old, worn washer with the new Thomas Dudley Diaphragm, ensuring it is seated flat and centered within the housing. Reassemble the components and restore the water supply. Compatibility is restricted to 4.1/2 inch round siphon systems; always measure the existing component before replacement. To maintain the life of the washer, ensure the cistern remains free of heavy mineral deposits that could cause premature abrasion.
