It is our advantages in various aspects that ensure that our FRP Medicine Industry Tank, NF4040 film, 4040 Extra Rejection RO Membrane ELements has distinctive features, high quality, and enjoys a high reputation in the market. We adhere on the tenet of 'Services of Standardization, to meet Customers' Demands'. Through the sincere cooperation, mutual learning and mutual improvement between the company and all sectors of the society, we finally achieve a win-win result.
Product Features
High rejection, High productivity, Stable performance.
Applications
Seawater desalination, Desalination treatment of high concentration brackish water, Concentration and recycling of high salt concentration.
Technical Parameters
Model | Permeate Flow GPD (m3/d) | Active Membrane Area ft2 (m2) | Stabilized Salt Rejection | Feed Spacer mil (mm) | Test Conditions |
MW-SW8040-375 | 7500(28.4) | 375(34.9) | 99.7% | 28(0.7) | 800psi/32000ppmNaCl |
MW-SW8040-400 | 8000(30.2) | 400(37.2) | 99.7% | 28(0.7) | 800psi/32000ppmNaCl |
MW-SW8040-440 | 8800(33.3) | 440(38.1) | 99.7% | 28(0.7) | 800psi/32000ppmNaCl |
1.All performance data are collected at 25℃ (77℉), PH7.4 - 7.6 and 7% recovery rate.
2.Permeate flows for single element may vary ± 15%.
Element Dimension

Model | Dimensions - Inches (mm) | ||
A | B | C | |
MW-SW8040-375 | 40.0(1016) | 1.12 (28.5) | 7.9(201) |
MW-SW8040-400 | 40.0(1016) | 1.12 (28.5) | 7.9(201) |
MW-SW8040-440 | 40.0(1016) | 1.12 (28.5) | 7.9(201) |
Operating Conditions
Maximum Operating Temperature | 45℃(113℉) |
Maximum Operating Pressure | 1200psi(83bar) |
Maximum Pressure Drop (single element) | 15psi(1.0bar) |
pH Range for Continuous Operation | 3.0-10.0 |
pH Range for Cleaning | 2.0-12.0 |
Chlorine Tolerance | <0.1ppm |
Maximum Feed SDI15 | 5.0 |
Maximum Feed Flux | 17.0m3/h |
Operation Notes
If membrane system performance drops by 10% under standard conditions, or membrane fouling and scaling occur, please rinse membrane elements according to regulation process immediately.
The manufacturer won't provide warranty service, if the operating requirements and conditions aren't complied with.

Package and Transportation
The packing materials are mainly vacuum bags, foam and cartons to prevent damage in transit. Keep the storage place cool and dry without direct sunlight, keep at low temperature. In the process of transportation, avoid direct sunlight and rain, handle with care. Membrane elements should be stored in their original packaging as far as possible before use. Please follow the instructions for membrane elements.

We will further expand our production scale to reward our customers with first-class Household Water Purifier Application RO Reverse Osmosis Membrane Element 1812-75 and services. Guided by the spirit of breaking through ourselves and transcending innovation, we realize the great vision of the company. All employees of the company are constantly working hard to open a new situation of high-quality development and cultivate outstanding enterprises with global competitiveness.
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