
PSI MEMBRANE® Pro-SW-HR seawater RO membrane,incorporated with innovative Thin Film Nanocomposite(TFN) technology, reduce the cost of desalination while delivering superior water quality. Provide industry leading salt rejection suitable for high salinity seawater applications.
- Produce 30% more flow:TFN Leading technology cable to produce 30% more flow than conventional TFC membrane.
- High rejection rate 99.85%:TFN innovated technology on surface guarantee excellent salt-rejection with lower pressures .
- Less Cleaning Frequency:TFN membrane outstanding anti-fouling performance is greatly reduce microorganisms and inorganic pollution contribute to less cleaning frequency .
- Wide Cleaning pH(1-13) Range:Provides the most effective cleaning performance, robustness and durability due to its widest cleaning pH range and chemical tolerance .
Product | Effective Membrane area ft² (m²) | Feed spacer thickness (mil) | Product Flow Rate ¹ ²g p d( m ³/d) | Stable Salt Rejection¹ (%) | Minimum Salt Rejection¹ (%) |
Pro-SW-HR-2521F34 | 13(1.2) | 34 | 300(1.1) | 99.85 | 99.7 |
Pro-SW-HR-2540F34 | 28(2.6) | 34 | 700(2.7) | 99.85 | 99.7 |
Pro-SW-HR-4021F34 | 33(3.1) | 34 | 800(3.0) | 99.85 | 99.7 |
Pro-SW-HR-4040F34 | 90(8.4) | 34 | 2300(8.7) | 99.85 | 99.7 |
Pro-SW-HR-8040F32 | 400(37) | 32 | 9000(34) | 99.85 | 99.7 |
Pro-SW-HR-8040F28 | 440(40) | 28 | 11000(41.5) | 99.85 | 99.7 |
Pro-SW-HF-8040F28 | 400(37) | 28 | 12000(45.9) | 99.80 | 99.7 |
1.Product flow rate and salt rejection rate were based on the following test conditions:
Pro-SW-HR :Feed water concentration 32000 ppm as NaCl, Feed water pressure 800 psi (5.5 MPa), Feed water temperature 77 ° F (25 ° C), Recovery rate 8% for each single membrane.
Pro-SW-HF:Feed water concentration 20000 ppm as NaCl, Feed water pressure 800 psi (5.5 MPa), Feed water temperature 77 ° F (25 ° C), Recovery rate 15% for each single membrane.
2. Variation range of product flow +/-20%;
3. F34 is a fiberglass wrapped case with a mesh thickness of 34 mil, we have extra type of case, mesh and membrane element available.
Operating Conditions:
Operating Limits | Unit | Value |
Maximum operatingpressure | psi(bar) | 1200(83)b |
Maximumfeed water temperature | °F(°C) | 113(45)a |
Maximum pressure drop | bar | 1 |
ContinuousoperationpH range | 2~11c | |
Cleaning PH range | 1~13 | |
Maximum feed watere SDl15 | 5 | |
Maximum influent turbidity | ntu | 1 |
Maximum residual chlorine concentration of influent | ppm | <0.1 |
b. The maximum operating pressure is related to the temperature and pH of the inlet water. When the inlet water temperature exceeds 35°C and/or the inlet water pressure exceeds 69 bar, please contact your account manager.
c. The pH limit of continuous operation is related to the inlet water temperature and operating pressure.
SIZE: mm
Model | A | B | C |
Pro-SW-HR-2521F34 | 533 | 61 | 19 |
Pro-SW-HR-2540F34 | 1016 | 61 | 19 |
Pro-SW-HR-4021F34 | 533 | 100 | 19 |
Pro-SW-HR-4040F34 | 1016 | 100.3 | 19.1 |
Pro-SW-HR-8040F32 | 1016 | 200 | 28.6 |
Pro-SW-HR-8040F28 | 1016 | 200 | 28.6 |
Pro-SW-HF-8040F28 | 1016 | 200 | 28.6 |











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1. Q: Are you a manufacturer or a trading company?
A:We are a manufacturer with our own dedicated factory and we also collaborate with other factories, leveraging our proprietary technology.
2. Q: What is the lead time for mass production?
A: Our production timeframe is 10-15 days for regular models.
3. Q: How do you guarantee product quality?
A: We meticulously inspect and control the entire process, from raw materials and production to the finished product and shipment.
4. Q: Can you offer samples before a mass order? If so, are they free or extra?
A: Yes, samples can be kindly arranged for your confirmation. Please contact us for more details.
5. Why choose us?
We boast advanced technology for the production of TFN membranes.
We have established China's first TFN coating production line, achieving stable mass production.
We have equipped a 1000m2 test platform with advanced water testing technology.
We provide RO, NF,UNF, Special Membrane Elements, and SPEC Customized Membranes.
We offer customers competitive prices with exceptional product quality and comprehensive services.

2016 - Proshare's pioneering PhD team, led by the esteemed Dr. Lin Xiaofeng, a notable expert of the National Major Talent Introduction Project, triumphantly returned to China.
2017 - Proshare established its headquarters in Nanopolis Suzhou, the world's largest hub for nanotechnology industrial applications.
2018 - Proshare inaugurated its first custom-designedTFN coating production line,commencing mass production.
2019 -PSI MEMBRANE®successfully replaced imported nanofiltration membrane products. It has been steadily applied to textile wastewater, landfill leachate, high salt & COD wastewater, and numerous other environmental protection fields. Additionally, it became the first domestic supplier of high-end household nanofiltration water purifiers.
2020 - Proshare introducedSPEC customized membranetailored for large environmental engineering enterprises, successfully serving several listed companies.
2021 - Proshare became an accredited supplier for Sinopec, providingintegrated TFN membrane solutionsfor the petrochemical industry.
2022 - Proshare expanded its footprint with subsidiaries in Shenzhen, Hunan Province, Fujian Province, and Jiangxi. We extended our services to customers, becoming the premier domestic supplier inemerging industries such as synthetic biology, lithium batteries, and copper foil, among others.
2023 - Proshare achieved a milestone by becoming the first domestic supplier ofseawater desalination membranesfor international luxury cruise companies.
2024 - Anticipation builds for future milestones.