The inlet fitting was crushed along with the plug. I solved the issue on my own, as I found another fitting at work, though metal. The filter was installed the next day. But the residue is bad. Although it may have been damaged in transit. Nobody will know this anymore. In general, the problem is solved, water is pouring, for three boilings in the kettle, not even a hint of sediment. The taste of tea has dramatically improved, everything is fine in the coffee maker too.
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