I have killed the factory built original fluff because of some unknown reason, a sock has come into the pump housing and is caught in the sieve. Because the water was logically no longer pumped out, I wanted the strainer Unscrew, which of course did not work, because the sock had indeed wrapped around the screen. Result: I had to open it by force and the plastic crap is naturally broken. (Excuse my life story) That happens with this screen does not guarantee, because in contrast to the one-piece verbautem Werksflusensieb the handle is rotated, because the screen is in two parts (see photo: black and white plastic). One thing I must remark: The screen was a bit too wide in the field of white plastic, sodas I had to rework a bit with a file. It was supposed to fit so ...