PX-70S Pressure Exchanger
Energy Recovery · S Series · SWRO Energy Recovery Device
| Performance | |
| Maximum HP Inlet Flow | 70 gpm (15.9 m³/h) |
| Maximum LP Outlet Flow | 70 gpm (15.9 m³/h) |
| Maximum Inlet HP | 1,200 psig (82.7 bar) |
| Maximum Inlet LP | 300 psig (20.7 bar) |
| Minimum Discharge Pressure | 14.5 psig (1 bar) |
| Peak Energy Transfer Efficiency | 98% |
| Service | SWRO Seawater Desalination |
| Design & Construction | |
| Operating Principle | Positive Displacement Isobaric |
| Moving Parts | Single ceramic rotor (no valves, no membranes) |
| Housing Material | Fiberglass Reinforced Polymer (GRP) |
| Internal Components | 254 SMO (UNS S31254) |
| End Ports | AL-6XN (UNS N08367) Investment Cast |
| Tension Rod Assembly | AL-6XN / Hastelloy C-276 |
| LP Interconnector | Titanium / AL-6XN / Super Duplex |
| O-Rings / Seals | EPDM (NSF/ANSI 61 compliant) |
| Fasteners (non-wetted) | 316 SS |
| Piping Connections | |
| Port Size | 1-1/2" (DN 40) |
| Connection Type | 1-1/2" Grooved-End Flexible Pipe Coupling |
| Max HP Inlet Velocity (U-config) | 12 ft/s (3.7 m/s) |
| Max HP Inlet Velocity (Z-config) | 7 ft/s (2.1 m/s) |
| Filtration Requirement | 20 µm nominal |
| Operating Conditions | |
| Operating Temperature | 33-120°F (0.6-49°C) |
| Shipping/Storage Temperature | 33-120°F (0.6-49°C) |
| Orientation | Horizontal (feedwater side up or inverted) |
| Weight & Dimensions | |
| Cartridge Weight | 18 lbs (8 kg) |
| Shipping Weight | 60 lbs (27 kg) |
| Cartridge Dimensions | 15 x 11 x 12 in (38 x 28 x 30 cm) |
| Shipping Dimensions | 30 x 11 x 12 in (76 x 28 x 30 cm) |
| Testing & Certification | |
| Performance Test | Standard (per ERI test protocol) |
| Cavitation Test | Standard |
| Material Certificates | Standard |
| Ceramic Dimension Inspection | Standard |
| Design Standard | ASME BPVC compliant housing |
| Certifications | CE Marked |
SWRO DesalinationSeawater ROEnergy RecoveryBrine Concentrate Recovery
Engineering Note: The PX-70S is a positive displacement isobaric energy recovery device for seawater reverse osmosis (SWRO) systems. It transfers hydraulic energy from the high-pressure RO concentrate stream to the incoming low-pressure seawater feed, achieving up to 98% energy transfer efficiency with no external power input. The single ceramic rotor design has no valves, diaphragms, or check valves, resulting in minimal maintenance and 60,000+ hour MTBF. Array configurations (U, Z, or T manifolds) scale to any plant capacity.
Need sizing assistance? Contact our engineering team for system design, array configuration, and quotation.
