Went to try and fix a hig level cistern today and came across an old Lowley ( or similar name ) syphon. Due to the fact i was unable to isolate the water supply i was unable to do the job today. Are there spare diaphragms available for these, if not what material do you use to make your own?. Bought a new syphon just in case but would prefer to make my own diaphragm if possible, any ideas plz.
