As I couldn't find the replacement strainer connector with the threads sold in Austria (Europe Version!?) So I designed my own and it fits perfect.

I used Fusion360 to design it and the built-in threads.

Thread settings for Fusion:

DIN-Pipe Threads
Size: 81.534mm
Type: G81.534x2.309
Class: B
Direction: Right

so F.T.I.J.P.I. ;-)