Pure Water & Clean Energy
Bringing Clean Water To Every Corner On Earth
Pure Water & Clean Energy
Bringing Clean Water To Every Corner On Earth
PX Pressure Exchangers that dramatically reduce power consumption in seawater reverse osmosis systems.
Energy Recovery, Inc. (ERI) manufactures the PX Pressure Exchanger line of energy recovery devices that capture hydraulic energy from the high-pressure RO concentrate stream. In seawater desalination, energy is the single largest operating cost. ERI devices can reduce power consumption by up to 60%, delivering a rapid return on investment and dramatically lowering the cost of desalinated water.
In a seawater RO system, the high-pressure concentrate (brine) stream leaving the membrane vessels contains a significant amount of hydraulic energy. Without energy recovery, this energy is wasted. The ERI PX pressure exchanger transfers the pressure energy from the concentrate stream directly to the incoming feed water, dramatically reducing the energy required by the high-pressure pump.
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Compact pressure exchangers for portable and small commercial seawater desalination systems. Significant energy savings even at smaller scales.
Mid-range energy recovery for commercial and containerized SWRO systems. Optimal balance of size, performance, and cost.
High-capacity energy recovery for industrial and municipal desalination plants. Maximum energy savings at scale.
Energy Recovery Inc. (ERI) manufactures PX Pressure Exchangers that capture and reuse the hydraulic energy from RO concentrate streams. ERI devices reduce energy consumption in seawater and brackish water RO systems by up to 60%, at peak efficiency up to 99%.
Current PX Q Series range: concentrate flow from 4.5 to 147.6 m³/h (20–650 gpm), operating pressure up to 83 bar (1,200 psi), volumetric mixing as low as 2%, 30-year design life and 99.8% uptime. The series spans PX 30 through the flagship PX Q650.
Same-day access to ERI inventory. Our Santa Clara facility is about an hour from ERI’s Bay Area warehouse, so we can move PX units and spares faster than distributors sourcing across the country — which matters when an energy recovery device is holding up a commissioning date or a plant is down.
ERI’s flagship pressure exchanger — the largest Q-Series device, up to 650 gpm (147.6 m³/h), for high-capacity municipal SWRO trains.
33% higher unit capacity than the PX Q300, up to 400 gpm (90.9 m³/h), with under 3% volumetric mixing.
High-capacity Q-Series pressure exchanger for large municipal SWRO trains.
High-capacity pressure exchanger for large SWRO trains.
Mid-capacity Q-Series PX for medium-large SWRO installations.
Mid-capacity Q-Series PX for medium SWRO trains.
Compact Q-Series PX for smaller industrial SWRO systems.
ERI manufactures PX Pressure Exchanger energy recovery devices — the PX Q-series and S-series — that transfer pressure energy from the SWRO brine stream to the feed, cutting seawater desalination energy use by up to 60%.
Yes. ForeverPure supplies and integrates genuine ERI PX pressure exchangers; parts are available through foreverpureplace.com.
Yes. We size and integrate ERI PX devices (or Danfoss iSave / FEDCO turbochargers) into the energy recovery train of a complete desalination system.
Contact us for system sizing and energy savings calculations for your SWRO project.
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