Seawater Extra Low Energy RO Membrane 9900 GPD w/ iLEC Endcaps, Filmtec (Size 7.9" x 40")

Sale price$999.00 USD

    • 9,900 GPD water production capacity
    • High rejection at lowest energy for seawater RO systems
    • 99.70% stabilized salt rejection
    • Trouble free treatment for a wide range of difficult feed water
    • Lowest energy and operation costs for seawater elements
    • Made in USA with advanced technology by Filmtec
Our FILMTEC™ extra low-energy seawater reverse osmosis membrane elements (9,900 GPD) offer the industry’s most reliable seawater desalination production with the lowest energy-consumption. They are ideal choices for two-pass seawater designs or high salinity brackish water applications. Advanced membrane technology and automated fabrication allow these elements to deliver consistent high flow rates to meet the water demands of both sea and land-based desalinators. Utilizes Filmtec’s iLEC interlocking endcaps help reduce system operating costs and reduce the risk of o-ring leaks that cause poor water quality. Low energy seawater membranes can withstand up to 1,200 psi operation without degradation in flow, salt rejection and physical appearance and their performance remains stable over many years, even under harsh operating conditions.

Membrane Description

(9,900 GPD)

Highest productivity available, with active area of 440 sq ft enables systems to deliver the lowest total cost of water by optimizing energy consumption, system productivity and operating flux.

Operating Limits

Membrane Type

Polyamide Thin-Film Composite

Maximum Operating Temperature

113 DegreeF (45 DegreeC)

Maximum Pressure Drop

15 psig (1.0 bar)

pH Range, Continuous Operation


pH Range, Short-Term Cleaning


Maximum Feed Silt Density Index


Free Chlorine Tolerance

< 0.1 ppm

Important Information

Proper start-up of reverse osmosis water treatment systems is essential to prepare the membranes for operating service and to prevent membrane damage due to overfeeding or hydraulic shock. Following the proper start-up sequence also helps ensure that system operating parameters conform to design specifications so that system water quality and productivity goals can be achieved.

Before initiating system start-up procedures, membrane pretreatment, loading of the membrane elements, instrument calibration and other system checks should be completed.

Please refer to the application information literature entitled “Start-Up Sequence” (Form No. 609-02077) for more information.

Operation Guidelines

Avoid any abrupt pressure or cross-flow variations on the spiral elements during start-up, shutdown, cleaning or other sequences to prevent possible membrane damage. During start-up, a gradual change from a standstill to operating state is recommended as follows:

  • Feed pressure should be increased gradually over a 30-60 second time frame.
  • Cross-flow velocity at set operating point should be achieved gradually over 15-20 seconds.
  • Permeate obtained from first hour of operation should be discarded.

General Information

  • Keep elements moist at all times after initial wetting.
  • If operating limits and guidelines given in this bulletin are not strictly followed, the limited warranty will be null and void.
  • To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution.
  • The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements.
  • Maximum pressure drops are 15 psi (1.0 bar) per element or 50 psi (3.4 bar) per multi-element pressure vessel (housing) whichever value is more limiting.
  • Avoid static permeate-side backpressure at all times.

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.

About Filmtec

FILMTEC Corporation is the leading manufacture of reverse osmosis and nanofiltration membrane elements for industrial, municipal, commercial, and home drinking water treatment and purification, as well as for other specialty applications. The company was incorporated in 1977 and is headquartered in Minneapolis, Minnesota. FILMTEC Corporation is a subsidiary of The Dow Chemical Company and part of Dow's Water & Process Solutions business group.