Heizung/Klima: Unknown type watervalve

[Beumers]

Hi all.
I studied all the topic's about problems with the IHKA system.
I came to the conclusion the watervalves had to be part of the problem. So I got them out of the car and disassembled the watervalves. I've seen pictures of the inside parts of different types of watervalves, so I was very puzzeled when I saw completely different inner parts. See attached pic's. Anyones know's this type of valves? And if so is there a repairset available that anyone knows of?
I seen these new types of valves on AliExpres for arond 50,-.(picture)
Makes more sense to buy a new pair of valves. They fit a E34 so they should fit my 1986 E32 as well.
Regards Henk.
No need to reply in English.