OK, here goes, and I apologize for the LOOOONG reply.
The last gray water pumps that Amel installed were Reya, but that is because Reya bought the company that made the Marina ZZ pump. It has a rated capacity of 30 liters/min 1800 liter/hour. Reya no longer sells this Marina ZZ. This pump was the Amel OEM pump installed on most SMs and all 54s.
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