SWRO High Pressure Pumps for Seawater Desalination Systems
Axial Piston Pumps with Industry-Leading Efficiency & Compact Design
Designed for SWRO skid manufacturers, Rohre HPS pumps cover 0.6–39 m³/h at up to 85 bar — compact, oil-free, and optimized for modular desalination systems.
Why Choose Rohre HPS Pumps for SWRO?
Best-in-Class Energy Efficiency
Mechanical efficiency up to 92%, significantly outperforming multistage centrifugal and triplex plunger pumps.
- Real-world SEC as low as 2.3 kWh/m³ vs. 2.6–2.7 kWh/m³ for centrifugal pumps
- Linear flow-speed relationship enables variable frequency drive (VFD) control without throttling losses
Compact & Lightweight Design
Half the size and weight of traditional pumps with:
- No crankcase or gearbox
- Direct motor drive, no belts or base couplings
- Flexible horizontal or vertical installation in tight spaces like ships or offshore platforms
Low Maintenance, Long Life
- Oil-free operation with only water lubrication
- Up to 8,000 hours maintenance interval
- No spring valves or wear-prone components
- Users report 6,000+ hours of uninterrupted operation in harsh marine environments
Superior Corrosion Resistance
All wetted parts made from Duplex 2205, Super Duplex 2507, and carbon-reinforced PEEK, ensuring long-term durability in high-chloride environments
Modular Scalability & Redundancy
- Positive displacement design allows linear flow scaling via parallel operation
- Ideal for containerized or modular SWRO units
- Natural redundancy: if one pump is offline, others maintain production
- Only one VFD needed to control group output
Oil-Free Clean Operation
No lubricants = no risk of membrane contamination or water pollution. Perfect for potable water systems on ships, islands, and military installations.
Compared to Traditional High-Pressure Pumps
| Feature | Rohre HPS Axial Piston Pump | Multistage Centrifugal Pump | Triplex Plunger Pump |
| Efficiency | 90%+ | 75-85% | 80-88% |
| Lubrication | Water only | Oil | Oil |
| Maintenance Interval | 6,000-8,000 hrs | 2,000-4,000 hrs | 500-2,000 hrs |
| Footprint | Small | Large | Medium |
| Flow Control | VFD (linear) | Throttle valve | Bypass valve |
| Noise / Vibration | Low | Low | High |
| Corrosion Resistance | Excellent | Moderate | Variable |
Proven Applications Across the Globe
1
EPC Contractors for SWRO Plants
We supplied 6 x HPS 31 axial piston pumps to an EPC contractor building a 3,500 m³/day SWRO plant in Singapore. The pumps were configured for parallel operation to meet modular capacity targets.
Achieved >18% energy savings compared to centrifugal pump design
Smooth load response during variable demand periods
Compact form factor enabled installation without expanding existing footprint
2
RO System OEMs for Marine & Offshore Applications
We support RO system manufacturers that serve marine, offshore, and energy applications. Our HPS pumps are integrated into desalination skids destined for cruise ships, FPSOs, and offshore platforms, where compact design and high corrosion resistance are essential.
Seamless integration into containerized or engine-room-based SWRO systems
Ideal for OEMs building for constrained, mission-critical environments
Oil-free operation ensures compliance with maritime discharge regulations
3
Mobile & Emergency RO Equipment OEMs
A leading OEM specializing in mobile desalination systems integrates HPS 1.0 and HPS 1.5 pumps into their truck-mounted and containerized SWRO units.
We supply these pumps as core components tailored for compact, rapidly deployable systems, delivering:
- Up to 2 m³/h per unit from pumps weighing <20 kg
Reliable operation in disaster relief, military missions, and remote off-grid islands
Modular expandability by simply increasing motor size or adding parallel pumps
4
Island Municipal Water Authorities
In remote island municipalities, we support water system integrators supplying public SWRO stations with high-efficiency HPS pumps as the designated high-pressure unit.
Low maintenance ideal for unattended operation
Oil-free design ensures potable water safety
Compatible with solar or hybrid-powered RO systems
5
Defense & Government Water System Integrators
Government and defense contractors rely on HPS pumps for tactical water purification systems.
Withstands extreme climates and shock conditions
Clean, oil-free output meets military potable standards
Long service intervals reduce logistical maintenance burden
6
RO Skid System OEMs & Packaged Unit Builders
We support RO system OEMs and skid manufacturers with full technical documentation, modular compatibility, and global delivery support.
Learn More & Find Your Ideal SWRO Pump
Explore the full range of Rohre RO pumps models, specs & solutions, or download datasheets, request a right selection guide