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Dow Filmtec SW30-6040 Reverse Osmosis (RO) Membrane

replacement 2,100 GPD seawater desalination reverse osmosis (RO) membrane element

Dow Water & Process Solutions seawater desalination reverse osmosis element for military applications.

Membrane Type:Thin-Film Composite (TFC)
Maximum Operating Temperature:113F (45C)
Maximum Operating Pressure:1,000 psi (69 bar)
Maximum Feed Flow Rate:28 GPM (106 l/min)
pH Range, Continuous Operation:2-11***
pH Range, Short-Term Cleaning:1-13* (30min)
Maximum Feed Silt Density Index:5 SDI
Free Chlorine Tolerance:<0.1 ppm**
Permeate Flow Rate:2,100 GPD (7.9 m3/day)*
Minimum Salt Rejection:99.0%
Filmtec SW30-6040 Reverse Osmosis (RO) Membrane

*The above benchmark values are based on the following test conditions: 32,000 ppm NaCl, 800 psi (5.5 MPa), 77F (25C), pH 8 and 10% recovery. Permeate flows for individual elements may vary +/-15%.

**Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty, Dow recommends removing residual free chlorine by pretreatment prior to membrane exposure. Most RO systems have carbon pre-filters for this purpose.

***Maximum temperature for continuous operation above pH 10 is 95F (35C).

Note: Active surface area guaranteed +/-5%. Active area as stated by FilmTec is not comparable to nominal membrane area often stated by some manufacturers.


   A: 40.0" (1,016mm)
   B: 1.27" (32.3mm)
   C: 1.5" (38.1mm)
   D: 5.97" (151.6mm)
Filmtec SW30-6040 Size Chart

Element fits nominal 6-inch I.D. pressure vessels.

Model Diameter Inches Length Inches Active Surface
Area ft2 (m2)
Test Pressure Permeate Flow
GPD (m3/day)
(w/ Free Shipping)
Filmtec SW30-6040
Our Stock #703080744
Dow Part #na
6 40 na 800 psi 2,100 (7.9)
MSRP: US$1,423.13
Price: US$797.00
You save: $626.13

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Notice: The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system.

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