New Geberit filling valve type Impuls 380?

Hello, after installing a new, second fill valve (I returned the first Geberit 380), after successfully filling and closing the valve properly, a little water flows in again after a few minutes. I can also hear a quiet hissing noise, just like with the first valve. What could this be? Or did I do something wrong during installation? The lifting bell is about half full of water, the rest is just air.

I hereby request helpful information

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Norina1603
1 month ago

Hello,

You can try to set the float a little deeper then if the pressure of the seal on the valve seat is increased. You can also just check it by raising the float a bit, then you should stop ticking!