How do I change flapper in cistern

SOURCE: toilet trouble

Based on the phrasing of your question, I'm thinking that the bad noise happens for the first time when the valve opens to start filling (this happens when you first let water into the bowl) and then again when the valve closes (when the cistern is full). Valves sometimes have a high-pitched squealing noise when it takes a long time to open or close this valve. Sometimes, you can make it go away by turning the screw to adjust the height that the ball/float has to be in order to shut off the water (the more horizontal, the longer it takes to shut off the flow, and the longer the noise continues). Sometimes, this is just caused by an aging mechanism and it turns out to be quicker and easier to just replace that part of the toilet (they make replacement kits that are very inexpensive and easy to install).

SOURCE: My Nabis Serene Close Coupled toilet cistern is

I think you better have this plumber back over for another go at it. If he is truely a plumber he will have no problem with this.

SOURCE: I have a Duravit Starck 2 toilet cistern which is

Did you replace the flush valve or the flapper?

There must either be a problem with the seal between the two surfaces of the flapper and flush valve or the flapper is being prevented by the flush system to returning to make a seal against the flush valve after the water completes draining during the flush cycle or more likely water is draining through the overflow tube.

Make sure the sealing surfaces are clean and not damaged.

Make sure the flapper is not being interfered with and is able to return to the closed position to make a complete seal against the flush valve.

Check adjustment of the water fill level to make sure the water is not filling above the water overflow. If the inlet valve does not shut-off when the level is adjusted to the proper level the water inlet valve may need replacing.

The following videos may prove helpful.


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