Industry’s Filtration Partner
The A-Series, family of proprietary thin-film reverse osmosis membrane elements are characterized by high flux and high sodium chloride rejection. AK Low Pressure Brackish Water Elements are selected when high rejection and low operating pressures are desired. These elements allow significant energy savings since good rejection is achieved at operating pressures as low as 100 psig (689 kPa).
Unit of Measure

Element Specification


N/A A-Series, Thin-Film Membrane (TFM™)

Flow Average

N/A 10500 gpd39.7 m³/day

Salt Rejection Average (NaCl)

N/A 99.0 %

Salt Rejection Minimum (NaCl)

N/A 98.0 %


N/A Average salt rejection after 24 hours operation. Individual flow rate may vary +25%/-15%.
Testing conditions: 500ppm NaCl solution at 115psig (793 kPa) operating pressure, 77ºF, pH7.5 and 15% recovery.

Active Area

N/A 400 ft²37.2 m²

Outer Wrap

N/A Fiberglass

Part Number

N/A 1206821

Dimensions and Weight

Dimension A (Length)

N/A 40.0 in101.6 cm
Dimension B1 N/A 1.125 in2.86 cm

Dimension C (Outside Diameter)

N/A 7.9 in20.1 cm

Boxed Weight

N/A 32 lb14.5 kg

Operating and CIP parameters

Typical Operating Pressure

N/A 100 psig689 kPa

Typical Operating Flux

N/A 10 - 20 GFD15 - 35 LMH

Maximum Pressure

N/A 400 psig2756 kPa

Maximum Operating Temperature

N/A 122 ºF50 ºC

Maximum Cleaning Temperature

N/A 122 ºF50 ºC

Optimum Rejection Recommended pH

N/A 7.0 - 7.5

Operating Range Recommended pH

N/A 4.0 - 11.0

Cleaning Range Recommended pH

N/A 2.0 - 11.5

Recommended Pressure Drop Over an Element

N/A 12 psig83 kPa

Recommended Pressure Drop Per Housing

N/A 50 psig345 kPa

Chlorine Tolerance

N/A 1,000+ ppm-hours, Dechlorination Recommended


N/A NTU < 1 SDI < 5


N/A These elements ship dry unless specified wet.
Trademark of General Electric Company; may be registered in one or more countries.

  • 1 Internal diameter unless specified OD (outside diameter).