The NEW PX™300
Clean, Energy Recovery Solution
With its new Quadribaric™ Technology, ERI introduces the next generation of PX™ energy recovery devices and sets a new industry standard with enhancements in performance and energy savings. At the core of the PX–300 is a patented Quadribaric™ Technology that revolutionizes the way the rotary PX devices perform, allowing them to do double the work with even greater efficiency.
The breakthrough PX–300 energy recovery device, with only one moving part, a side-port design, and higher capacity delivers:
- Higher Efficiency
- Less Mixing
- Quieter Operations
- Greater Reliability
ERI’s PX devices are pulsation-free, virtually maintenance-free and easy to run. They require no customization and save the most energy. With minimal footprint and a highly scalable design for projects large and small, PX technology is ideal for new plants or retrofits of existing plants.
| Product | Capacity (gpm) | Capacity (m3/hr) |
| PX-300 | 200-300 | 45-68 |
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Technical Datasheets
Unmatched Performance & Reliability
The PX–300 device offers the same modularity, reliability, maintenance-free advantages, and high efficiency (up to 98%) as ERI’s PX-220 and PX-260 devices. The new device also achieves a reduction in mixing compared to the PX-220 and PX-260 devices, a factor that enhances desalination system performance by reducing membrane feed pressure. The PX–300 device is designed to be operated near the top end of its flow range, thereby minimizing the number of devices necessary to meet the SWRO train flow requirement. It also performs well at its lowest rated flow, which provides operational flexibility, supporting a range of SWRO membrane recovery rates of over 15%.
The PX–300 device delivers the best long-term performance of any device available today. Unlike competing technologies that are prone to wear and significant efficiency degradation over time, the PX–300 device contains no reciprocating components or constantly actuating valves that can complicate startups and require unplanned maintenance. Its internal components are made of highly engineered ceramics, corrosion-proof reinforced polymers, and wrought high-alloy stainless steels. In addition, the PX–300 device features an industry-standard, side-ported housing to allow easy piping alignment and access to internal components without uninstalling the housing.
Smooth Startup and Operation
PX technology, including the PX–300 device, operates without the pulsations and water hammer caused by competing isobaric energy recovery devices. These pulsations have been known to complicate and delay plant startups and may damage plant structures, compromise peripheral desalination equipment, or adversely affect plant safety. In contrast, hundreds of SWRO plants around the world have started up with PX technology without delays or pulsation-related equipment performance problems.
Highly Scalable, Elegant Design
PX technology is compact and easy to operate. Up to six times smaller and 90% lighter than competing energy recovery devices, PX device installations require no special foundations or support systems, helping to minimize the overall footprint of a desalination plant. PX devices have just one moving part that automatically adjusts to changes in flow rates, requiring no electricity or control system. PX rotors float on hydrodynamic bearings that do not exhibit wear over long device lives. The simple, reliable design requires no periodic maintenance, enabling continuous plant operation.
All of ERI’s PX models, including the PX–300 device, can be operated in parallel in arrays of multiple devices. PX units may be added as required for increased process flows with off-the-shelf availability. In addition to its almost unlimited capacity, the redundancy found in PX device arrays assures continuity of plant operations when compared to competing technologies. Furthermore, PX devices can be installed in any orientation and can be integrated into existing infrastructure without customization. This plug-and-play capability is ideal for new construction as well as for retrofitting or expanding existing plants.