Hydranautics — Reverse Osmosis & Nanofiltration Membrane Elements
Global supply of industrial reverse osmosis and nanofiltration membrane elements from Hydranautics (USA / Nitto Group). Product lines include CPA, ESPA, SWC, LFC, ESNA, and sanitary DairyRO separation elements engineered for high-purity water and process trains by SpareX.
High-Rejection Brackish Water Reverse Osmosis Membrane Elements CPA
Hydranautics CPA membrane elements achieve salt rejection up to 99.8% for brackish water desalting across semiconductor and utility power sectors. Models CPA5-LD and CPA6-LD feature patented LD technology with 34 mil feed spacers. Available in 4.0 and 8.0 inch sizes with areas up to 440 sq ft.
- Nominal sodium chloride rejection reaching 99.8% for ultrapure water trains
- Thick 34 mil feed spacer configuration engineered to enhance cleaning cycles
- Active membrane surface area options of 400 and 440 square feet (37.2–40.9 m2)
- Interconnectors, brine seals, anti-telescoping rings, and EPDM housing O-rings
Energy-Saving Low-Pressure Reverse Osmosis Membrane Elements ESPA
Hydranautics ESPA membranes deliver energy savings by operating at ultra-low feed pressures while retaining high productivity. Their composite polyamide chemistry cuts pump power consumption by up to 30%. The family encompasses ESPA1, ESPA2-LD, and ESPA4-LD with areas from 85 to 440 sq ft.
- Ultra-low feed pressure operation from 10.3 bar reducing plant power consumption
- Elevated permeate flux with nominal salt rejection specifications up to 99.6%
- Hydrophilic membrane surface engineered with low differential pressure spacer
- Brine seals, internal coupling tubes, thrust retainers, and port adapters
High-Rejection Seawater Reverse Osmosis Membrane Elements SWC
Hydranautics SWC elements are tailored for seawater desalination treating high-salinity feed water up to 45,000 mg/l at operating pressures reaching 83 bar. Models SWC4+, SWC5-LD, and SWC6-MAX achieve boron rejection up to 95% and 99.8% salt separation for dependable drinking water output.
- Maximum operating pressure rated to 83 bar (1,200 psi) in fiberglass vessels
- Industry-leading 99.8% salt rejection with superior boron reduction up to 95%
- Available in 400 and 440 sq ft geometries to optimize vessel train footprint
- High-pressure port fittings, thrust cones, interconnector couplings, and seals
Low-Fouling Composite Reverse Osmosis Membrane Elements LFC
Hydranautics LFC3-LD elements combine a neutrally charged membrane barrier with surface hydrophilicity. This tailored surface prevents organic matter and colloidal foulants from adsorbing onto the polymer matrix during wastewater reuse. Available in 4.0 and 8.0 inch sizes to cut CIP wash intervals.
- Neutral surface charge minimizes adsorption of charged organic foulants and colloids
- Hydrophilic surface treatment enables rapid hydraulic recovery during CIP washings
- Consistent 99.7% salt rejection under elevated biological and COD feed loads
- End cap seals, interconnector O-ring kits, centering retainers, and port plugs
Nanofiltration Membrane Elements ESNA for Softening & Sulfate Removal
Hydranautics ESNA1-LF-LD and ESNA1-LF2-LD nanofiltration elements provide separation of divalent hardness ions, sulfates, and organics. Operating under 6.2 bar, they permeate monovalent salts while lowering pumping power. Widely installed for water softening and mining wastewater remediation.
- High hardness rejection removing 91% to 99% of divalent calcium and sulfates
- Ultra-low net driving pressure under 6.2 bar (90 psi) delivering energy savings
- Patented 34 mil LD spacer architecture prevents particulate clogging in channels
- Permeate collector adapters, housing brine seals, end plugs, and alignment rings
Process Separation & Sanitary Membrane Elements DairyRO, DairyNF & SanRO
Hydranautics DairyRO, DairyNF, and SanRO-HS sanitary elements are engineered for food processing and pharmaceutical water under USP and FDA norms. Their full-fit net wrap design eliminates dead stagnation pockets, tolerating daily high-temperature CIP washings during whey concentration.
- Full-fit net-wrapped outer construction eliminates stagnant dead-flow areas
- Thermal and chemical resilience under rigorous alkaline and acid CIP protocols
- Effective concentration of dairy whey, juice clarification, and enzyme streams
- Sanitary Tri-Clamp fittings, food-grade end connectors, and high-temp gaskets
Industrial Membrane Separation Systems & Elements Hydranautics
American manufacturer Hydranautics, operating within the global Nitto Group, engineers high-performance spiral-wound reverse osmosis and nanofiltration membrane elements for industrial water treatment.
The equipment delivers dependable mineral separation across municipal utilities, power stations, and semiconductor manufacturing facilities worldwide.
The product portfolio spans high-rejection CPA elements, energy-saving ultra-low-pressure ESPA membranes, high-salinity seawater SWC modules, low-fouling composite LFC elements, and sanitary DairyRO systems tailored for food, beverage, and life sciences processing.
Engineering Selection and Modeling of Hydranautics Membranes
Selecting Hydranautics membrane elements requires evaluating feed water salinity, required permeate purity, and operating differential pressure across the membrane train. Accurate projection modeling guarantees balanced flux distribution and mitigates scaling risks in second-stage elements.
SpareX engineers deliver comprehensive sizing reviews, membrane vessel cross-flow calculations, and procurement support for replacement elements, interconnectors, and end cap seals. Every delivery includes manufacturer verification datasheets and global shipping coordination.
Hydranautics and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Hydranautics and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.
Related equipment manufacturers
- Equipment and parts for Hiperbaric
- Equipment and parts for SAIREM
- Equipment and parts for IcanClave
- Equipment and parts for STELA Laxhuber
Documents and sources
- Hydranautics overview — membrane separation technologies and Nitto structure
- CPA membrane elements — technical specifications and brackish water desalting
- ESPA membrane series — energy-saving low-pressure reverse osmosis elements
- SWC seawater desalination membranes — operating parameters and salt rejection
- LFC low-fouling membranes — hydrophilic polyamide elements with LD technology
- ESNA nanofiltration — water softening, sulfate and organic matter removal
- Process membranes DairyRO and SanRO — sanitary filtration and separations
