After installation and the extensive "test" mode, I owe it to the manufacturer of this high-quality valve, here write my very good experience, even though I am lazy in writing and only very few reviews Be.
Clearly: This comfortable kitchen mixer with the specificity of extractable hose can not '' just once 'and not be fitted with two "lefts".
Nevertheless, the case of concentrated work by the very good installation instructions and artisanal experience and proper tools, everything is ultimately a "child's play".
The described in various reviews bad results ("The pulling out of the shower head is very heavy and squeals ..." or "The bearing surface ... is to klein..verkantet the fitting and is slightly wrong ...") comply with proper installation Thank goodness not the facts but are simply incorrect. There are "self-inflicted suffering," because when installing serious mistakes were made.
So I had to, for example, increase the round hole of the coupling being replaced in stainless steel sheet with a half-round file, so the flushing hose had free passage, otherwise would be pulling out (and reinsertion) have been very difficult or impossible and would "creaky".
As simple as that!
The operation of the valve is also due to the ceramic seal (very important feature and give correspondingly expensive, but for me a "must"), compared to the old battery a "feel-good experience."
There would be by my side even further explanations and comments on the "bad" experiences in various reviews on this product, but it should be enough ... to the conclusion in my view:
100% buy rating and built by a good (maybe even amateur) craftsmen.