I've just given someone a hand to replace the syphon in their WC - fault symptom was that the flush handle needed to be 'pumped' to get the WC to flush. Conventional wisdom suggests that the flap at the base of the syphon, which gets lifted by the flush handle, wasn't forming a good seal to the side of the syphon and hence failing to lift enough water to start the flush.
Away we went to the plumber's merchants, got an identical replacement, installed it, and at the first flush; got EXACTLY the same symptoms. I checked the conditiion of the flap prior to fitting it, and it looked good, and when operated in the dry, sounded good as it dragged along the side of the syphon wall.......... but it still takes a couple of 'pumped' pushes of the flush handle to get it to go.
What am I missing here?
Regards, Graham
Away we went to the plumber's merchants, got an identical replacement, installed it, and at the first flush; got EXACTLY the same symptoms. I checked the conditiion of the flap prior to fitting it, and it looked good, and when operated in the dry, sounded good as it dragged along the side of the syphon wall.......... but it still takes a couple of 'pumped' pushes of the flush handle to get it to go.
What am I missing here?
Regards, Graham