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WaterSolutions DOW FILMTEC BW30-440i

The DOW™ FILMTEC™ BW30-440i element is a high-productivity element combining the highest active membrane area available in the industry today with the high rejection BW30 membrane. It is designed to minimize capital expenses in high-purity industrial water applications without increasing operating flux.

Produces 10% more water compared to the DOW FILMTEC BW30-400 element at the same operating pressure and high rejection, enabling lower capital expense for new systems, or increased water production in an existing system.
Includes iLEC™ interlocking endcaps, which reduce system operating costs and the risk of o-ring leaks that can cause poor water quality.
Designed using an industry standard 1.125 inch ID permeate tube for interchangeability with other brackish water elements.

Nominal Active Surface Area ft² (m²)	Permeate Flow Rate gpd (m³/d)	Stabilized Salt Rejection (%)	Minimum Salt Rejection (%)
440 (41)	11,500 (43)	99.5	99.0

Permeate flow rate and salt rejection based on the following test conditions: 2000 ppm NaCl, 225 psig (15.5 bar), 77°F (25°C), pH 8 and 15% recovery.
Flow rates for individual elements may vary, but will be no more than 15% below the value shown.
Sales specifications may vary as design revisions take place.
Active area guaranteed +/-3%. Active area as stated by Dow is not comparable to nominal membrane area often stated by some manufacturers. Measurement method described in Form No. 609-00434 (168KB PDF).

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