
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 dedicated manufacturer with our own factory. We also collaborate with other factories using our proprietary technology.
2. Q: What is the lead time for mass production?
A: Our standard production time is 10-15 days for regular models.
3. Q: How do you ensure product quality?
A: We perform rigorous inspections and control measures throughout the entire process, from raw materials to production, and from the finished product to shipment.
4. Q: Can you provide samples before a mass order? Are they free or extra?
A: Absolutely, samples will be arranged for your confirmation. Please contact us for more details.
5. Why choose us?
We boast advanced technology for TFN membrane production.
We have pioneered the first TFN coating production line in China, achieving stable mass production.
We are equipped with a 1000m2 test platform and advanced water testing technology.
We provide RO, NF,UNF, Special Membrane Element, and SPEC Customized Membrane as well.
We offer competitive pricing, excellent product quality, and comprehensive services to our customers.

2016 - The Proshare PhD. team, led by the esteemed Dr. Lin Xiaofeng, a renowned expert from the National Major Talent Introduction Project, made their triumphant return to China.
2017 - Proshare strategically headquartered in Nanopolis Suzhou, the world's largest nano technology industrial application hub.
2018 - Proshare established its first exclusively designed TFN coating production line and commenced mass production.
2019 - PSI MEMBRANE® successfully replaced imported nanofiltration membrane products, finding stable applications in textile wastewater, landfill leachate, high-salinity & COD wastewater, and numerous other environmental protection sectors. It also became the premier domestic supplier of high-end household nanofiltration water purifiers.
2020 - Proshare launched SPEC customized membrane solutions for large-scale environmental engineering enterprises, successfully serving several publicly listed companies.
2021 - Proshare became a qualified supplier for Sinopec, providing integrated TFN membrane solutions for the petrochemical industry.
2022 - Proshare established subsidiaries in Shenzhen, Hunan Province, Fujian Province, and Jiangxi, extending our service reach and becoming the leading domestic supplier for emerging industries such as synthetic biology, lithium batteries, and copper foil.
2023 - Proshare became the first domestic supplier of seawater desalination membranes for international luxury cruise companies.
2024 - To be announced. Stay tuned for more innovations.