High-Pressure PX®

Best-in-class Energy Recovery in Desalination and Wastewater Treatment

PX Pressure Exchanger for energy recovery

Our award-winning PX® Pressure Exchanger® (PX) family of products provides unmatched energy recovery for seawater reverse osmosis (SWRO) desalination systems. Large and small desalination projects around the world rely on our range of PXs to achieve optimal operations and maximum energy savings. Designed with only one moving part using highly engineered alumina ceramic, the PX stands up to the harshest of environments resulting in an unmatched life cycle cost advantage.


Designed for maximum efficiency, the PX consumes no electrical power, enabling SWRO facilities to reduce their energy consumption by as much as 60%.


With no scheduled maintenance and proven performance for the long run, our PXs offer unbeatably low life cycle costs.


Our range of PX capacities provides flexibility to optimize train size to specific project requirements, making the PX the ideal solution for new installations and retrofits alike.

How the PX Pressure Exchanger Works

Consuming no electrical power and engineered with only one moving part made of highly durable and corrosion-resistant ceramic, learn how the PX Pressure Exchanger maximizes your facility’s uptime:

PX Q Series

The PX Q Series is the gold standard in energy recovery devices. It includes the PX Q400, PX Q300, PX Q260, PX Q220, PX Q180, and PX Q140.

Quiet operation

PX Q devices offer operational sound levels below 79 decibels—comparable to a home vacuum cleaner—to enhance the safety of SWRO plant working environments through reduced audio levels.


PX Q devices provide reduction in fluid mixing, resulting in lower membrane feed salinity and pressure, and higher desalination system performance.


Up to 32 parallel PX Q devices have been successfully installed in a single train, with 10 to 16 PXs commonly installed in parallel.


PX Q devices perform with unparalleled efficiency—up to 98%.

Front and back view of PX Q Series

PX models for small and medium size plants:
PX 90, PX 70, PX 45, and PX 30


Flexibly designed for small and medium size plants


Offers 97% peak efficiency

Modular Design

Can be installed in parallel according to specific plant needs

Front and back view of PX S Series
PX Powertrain

PX Powertrain

The PX PowerTrain combines Pressure Exchanger® (PX) devices with frame support and ancillary equipment into a compact, ready-to-install ERD array package


  • When combined with our SWRO pumps, provides a complete ERD solution
  • Easy installation
  • Designed to ensure optimal PX operation
  • Saves time and resources working with one supplier


  • Includes award-winning PX Pressure Exchanger technology
  • Train production capacity starting from 3000 CMD
  • On-site commissioning support available
  • Provides compact and rugged structural support for PX Pressure Exchanger
  • 3D models available for easy integration into plant design
PX Powertrain
On left, SWRO without Energy Recovery Sevices (ERDS). On right, SWRO with the PX Pressure Exchanger

Historically, energy consumption and costs made SWRO uneconomical. With the PX Pressure Exchanger, up to 60% of that wasted energy can be recycled, driving substantial saving and emission reductions. In addition, the site and/or number of high pressure pumps can be decreased.

Long Lasting

Designed for a 25-year life cycle


No scheduled maintenance


Access to our support team of technical specialists to provide support at every phase of your project

Superior Precision and Durability

The PX cartridges have only one moving part and are made with high-purity aluminum oxide ceramic. They’re corrosion-proof and three times more abrasion-resistant than steel. All that adds up to unmatched durability.

We design and manufacture ceramic PX components in-house at our California headquarters. This allows us to control the precision and quality of our core components down to the micrometer level, ensuring every PX device performs with maximum efficiency, durability, and reliability.

PX ModelFlow Range per Unit (brine-flow)Quiet Operation
PX Q40065.9 – 90.9 m3/h
PX Q30045.4 – 68.1 m3/h
PX Q26040.9 – 59.1 m3/h
PX Q22031.8 – 50.0 m3/h
PX Q18022.7 – 40.9 m3/h
PX Q14020.4 – 31.8 m3/h
PX 9013.6 – 20.4 m3/h
PX 709.1 – 15.9 m3/h
PX 456.8 – 10.2 m3/h
PX 304.5 – 6.8 m3/h

Contact us to discuss which PX is right for you.

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The world’s need for clean water is intensifying, driven by population growth, industrialization, rapid urbanization, and climate change. According to United Nations estimates, global demand for water will surge 30% by 2050.

A breaking wave

Wastewater Treatment

Membrane technologies now offer an energy and cost-effective way to meet regulations requiring minimal liquid discharge (MLD) and zero liquid discharge (ZLD) for wastewater treatment. By employing energy recovery devices, those savings can be compounded while preserving system reliability and operability.

industrial wastewater treatment solutions for ZLD MLD energy recovery