Semi-hermetic motorized pressure exchanger

A motorized pressure exchanger comprising:

• a rotor configured to exchange pressure between a first fluid and a second fluid;
• a shaft comprising a first distal end coupled to the rotor;
• a motorized end cap forming an interior volume;
• and
• an internal motor disposed in the interior volume and coupled to a second distal end of the shaft.

A motorized pressure exchanger comprising:

• a rotor configured to exchange pressure between a first fluid and a second fluid;
• a motorized end cap forming a center bore;
• a shaft comprising a first distal end coupled to the rotor, wherein the shaft is routed through the center bore of the motorized end cap;
• and
• a magnetic coupling assembly coupled to the motorized end cap and a second distal end of the shaft.