Stevenson Plumbing and Electrical Supplies

Round Derwent Macdee Metro Toilet Syphon Diaphragm
Derwent Metro Syphon Diaphragm Washer - Round

Replacement round "Metro" type diaphragm for your toilet cistern syphon - approx 120mm diameter.

Application :

If your toilet won't flush or requires several pressings on the handle to make it flush properly (or at all), then the chances are that the large diaphragm washer (membrane) inside the syphon is damaged. They can crack, disintegrate or fold over and any one of these faults can stop the WC flush mechanism from working properly.