Energy Recovery Launches Next-Generation PX Q650 Pressure Exchanger for Large-Scale Desalination
Energy Recovery Inc. (Nasdaq: ERII), a global leader in energy-efficient technologies that enable affordable and reliable water production while helping reduce industrial emissions, has announced the launch of its newest innovation for the desalination sector—the PX Q650 Pressure Exchanger. The newly introduced device represents the next generation of energy recovery technology designed specifically to meet the growing scale and performance demands of modern desalination plants.
The PX Q650 builds on the company’s established PX Pressure Exchanger platform, which has become a widely adopted energy recovery solution in seawater desalination facilities worldwide. With the introduction of this latest model, Energy Recovery aims to deliver significantly higher flow capacity, improved efficiency, and lower mixing levels while maintaining the exceptional durability and reliability that customers have come to expect from its products.
As desalination continues to expand globally to address water scarcity and population growth, plant developers are increasingly seeking technologies that reduce energy consumption and operating costs. The PX Q650 was developed to support these requirements, enabling desalination facilities to operate more efficiently while reducing their environmental footprint.
Advancing Energy Recovery Technology
At the core of the PX Q650 is Energy Recovery’s proven isobaric pressure exchanger design, a technology that has been refined over decades of engineering development and operational experience. The isobaric system works by directly transferring pressure energy from high-pressure brine exiting the reverse osmosis system to incoming seawater feed. This process dramatically reduces the amount of energy required to pressurize seawater for desalination.
Like all PX Pressure Exchangers produced by the company, the PX Q650 features a remarkably simple mechanical design that includes only one moving part. This component is constructed from highly durable alumina ceramic, a material chosen for its exceptional strength, corrosion resistance, and longevity under high-pressure operating conditions.
The simplicity of the design contributes significantly to the product’s reliability and operational lifespan. According to the company, the PX Q650 is engineered with a design life of up to 30 years and requires no scheduled maintenance throughout its operating life. This approach not only reduces operational complexity for plant operators but also lowers the total lifecycle cost associated with energy recovery devices.
In addition to durability, the technology provides substantial energy savings. Reverse osmosis systems are among the most energy-intensive components of desalination plants, as they require high pressures to force seawater through specialized membranes. By recovering pressure energy that would otherwise be lost, PX Pressure Exchangers can reduce the energy consumption of reverse osmosis systems by up to 60%.
Published performance data further indicate that PX Pressure Exchangers deliver some of the highest uptime levels of any energy recovery device used in large-scale desalination plants, reinforcing their reputation for reliability in mission-critical water infrastructure.
Key Advantages of the PX Q650
The newly launched PX Q650 introduces several performance improvements designed to address the needs of modern, high-capacity desalination facilities.
1. Highest Capacity in the Market
One of the most notable enhancements of the PX Q650 is its significantly increased flow capacity. The device offers a flow range from 250 to 650 gallons per minute (gpm), representing a 63% increase in peak flow capacity compared with the earlier PX Q400 model.
This increase allows plant designers to deploy fewer energy recovery devices per desalination train, which can simplify system design and reduce the physical footprint of the energy recovery array within a facility. Fewer devices also mean fewer connections, simplified piping, and potentially lower installation and maintenance costs.
2. Ultra-High Efficiency and Low Mixing
Efficiency remains a defining characteristic of Energy Recovery’s pressure exchanger technology, and the PX Q650 continues that tradition with peak efficiency levels reaching up to 99%.
Another critical performance metric in desalination energy recovery is volumetric mixing, which refers to the degree to which the high-pressure brine mixes with incoming seawater. Excessive mixing can reduce system efficiency and increase energy consumption.
The PX Q650 achieves volumetric mixing as low as 2%, one of the lowest levels available in the market. This combination of high efficiency and low mixing enables desalination plants to achieve lower specific energy consumption, which directly translates to reduced operating costs and improved overall system performance.
3. Wide Operating Flexibility
The PX Q650 is also designed to provide exceptional operational flexibility. It features the highest turndown ratio currently available in the market, allowing desalination plants to maintain efficient operation even when operating conditions vary.
This flexibility can be particularly valuable for facilities that experience fluctuating demand or changing feedwater conditions, enabling operators to maintain optimal performance without sacrificing efficiency.
Supporting the Next Generation of Desalination Projects
According to Energy Recovery executives, the development of the PX Q650 reflects the evolving needs of the desalination industry, where plants are becoming larger, more complex, and more performance-driven.
Rodney Clemente, Senior Vice President of Water at Energy Recovery, emphasized that the new product was designed to set a new benchmark for large-scale desalination performance.
He noted that the PX Q650 builds on decades of proven performance from the company’s pressure exchanger technology while providing the increased capacity, efficiency, and reliability required by today’s major infrastructure projects.
Clemente also highlighted the scalability of the new solution, explaining that the PX Q650 offers plant developers a highly adaptable energy recovery technology capable of supporting projects of varying sizes and configurations. By improving efficiency and reducing operating costs, the technology also helps lower long-term project risk for desalination operators and investors.
Enhanced Warranty and Product Assurance Program
In addition to introducing the PX Q650, Energy Recovery has also announced an expansion of its product assurance and warranty program for high-pressure desalination pressure exchangers.
The enhanced program applies to PX devices sold and shipped on or after March 9, 2026, and reflects the company’s confidence in the long-term reliability of its technology.
Under the updated program, Energy Recovery is doubling the warranty coverage for key components and device performance, providing additional peace of mind for desalination plant developers and operators.
The new warranty terms include:
- A 10-year industry-leading warranty for ceramic components, which are critical to the device’s performance and durability.
- A 4-year industry-leading performance warranty for PX devices, measured from the date of shipment.
These expanded warranties are made possible by the inherently simple design and long operating life of the PX technology platform. By extending coverage, Energy Recovery aims to further strengthen customer confidence and support the deployment of its solutions in major desalination projects around the world.
Digital Design Support for Engineers
To assist plant designers and engineers in integrating the new device into desalination systems, specifications for the PX Q650 have been incorporated into Power Model Pro, Energy Recovery’s digital configuration and system design tool.
Power Model Pro enables engineers to simulate system performance, plan configurations, and select appropriate components for reverse osmosis systems. By including the PX Q650 within the platform, Energy Recovery allows designers to evaluate how the new technology can improve system efficiency, optimize device selection, and streamline project planning.
Addressing Global Water Challenges
The launch of the PX Q650 comes at a time when desalination is playing an increasingly important role in addressing global water scarcity. Regions around the world—including the Middle East, Australia, the United States, and parts of Asia—are expanding desalination capacity to provide reliable sources of potable water for growing populations and industries.
However, energy consumption remains one of the largest cost drivers in desalination operations. Technologies that improve energy efficiency can significantly reduce operational costs while also lowering greenhouse gas emissions associated with power generation.
Energy Recovery’s pressure exchanger technology has already been widely deployed across hundreds of desalination plants globally, helping to reduce energy use and improve plant economics. With the introduction of the PX Q650, the company aims to extend these benefits even further, particularly for the next generation of large-scale desalination facilities.
A New Benchmark for Desalination Efficiency
By combining higher capacity, ultra-high efficiency, and enhanced reliability with expanded warranty coverage, the PX Q650 represents a significant step forward in energy recovery technology for desalination.
For plant developers, the device offers a scalable solution that can support larger projects while minimizing energy consumption and operational complexity. For operators, the technology promises long-term reliability and lower lifecycle costs.
As the global demand for sustainable water infrastructure continues to rise, innovations like the PX Q650 demonstrate how advanced engineering can help desalination become more efficient, cost-effective, and environmentally responsible.
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