Wet rotor circulation pumps

Wet rotor

— the reason for this name is that such rotors are in direct contact with water or other liquid that the pump pumps. This liquid cools and lubricates moving parts, which has a positive effect on both reliability and noise levels — suffice it to say that such pumps are recommended for residential applications. In addition, wet rotors are simpler and cheaper than dry ones. But their efficiency is much lower, which makes it difficult to create high-performance units.