core technology

Graphic of the interior of a PX Pressure Exchanger in front of a Bar/PSI graph

How it Works

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Graphic of the top half of the PX rotor emphasizing how it works
Graphic of the bottom half of the PX motor emphasizing how it works
Graphic of the entire PX motor demonstrating how it works

Low-pressure seawater or wastewater enters the PX rotor duct and is sealed. The high-pressure reject brine from the membrane enters the PX from the opposite side.

The high-pressure brine rotates the duct, transferring hydraulic energy to the low-pressure seawater or wastewater. The high-pressure fluid in the duct is then sealed.

Both fluid streams exit the PX separately. The rotor duct charges and discharges as the pressure exchange repeats, fluctuating between sealed and pressure exchanger phases .

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CONSTANTLY INNOVATING

PX Q650

Our most efficient, highest capacity PX for seawater reverse osmosis desalination facilities.

The PX Q650 is Energy Recovery’s highest capacity pressure exchanger, delivering best‑in‑class performance from our trusted PX® Pressure Exchanger® technology with up to 99% peak efficiency. Thanks to its high performance and low maintenance, the PX Q650 provides significant energy and cost savings and offers extremely low projected life cycle cost.