The A-Series family of proprietary thin-film reverse osmosis membrane elements is characterized by high flux and high sodium chloride rejection. AK HR Low Pressure Brackish 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).
These elements are recommended for low brackish water with salt concentration (TDS) levels up to 1,000mg/l. In turn, AK HR LE elements produce a permeate quality close to a standard brackish membrane element at a much lower pressure.
AK HR LE elements feature a FRP outer wrap and female end connections.
These elements are recommended for low brackish water with salt concentration (TDS) levels up to 1,000mg/l. In turn, AK HR LE elements produce a permeate quality close to a standard brackish membrane element at a much lower pressure.
AK HR LE elements feature a FRP outer wrap and female end connections.
Unit of Measure
Element Specification
Membrane |
N/A Thin-Film Membrane (TFM™) |
Average Permeate Flow |
N/A 10200 gpd38.6 m³/day |
Average NaCl Rejection |
N/A 99.5 % |
Minimum NaCl Rejection |
N/A 99.0 % |
Note |
N/A
Average salt rejection after 24 hours operation. Individual flow rate may vary +25%/-15%. Testing conditions: 500ppm NaCl solution at 115psi (862kPa) 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 3040998 |
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 35 lb16 kg |
Operating and CIP parameters
Typical Operating Pressure |
N/A 120 psi830 kPa |
Typical Operating Flux |
N/A 10 - 20 GFD15 - 35 LMH |
Maximum Operating Pressure |
N/A 400 psi2758 kPa |
Maximum Continuous Operation Temperature |
N/A 122 ºF50 ºC |
Maximum Clean-In-Place (CIP) Temperature |
N/A 122 ºF50 ºC |
Optimum Rejection pH Range |
N/A 7.0 - 7.5 |
Continuous Operation pH Range |
N/A 4.0 - 11.0 |
Clean-In-Place (CIP) pH Range |
N/A 2.0 - 11.5 |
Maximum Pressure Drop Over an Element |
N/A 12 psi83 kPa |
Maximum Pressure Drop Per Housing |
N/A 50 psi345 kPa |
Chlorine Tolerance |
N/A 1,000+ ppm-hours, Dechlorination Recommended |
Feedwater |
N/A NTU < 1 SDI < 5 |
- 1 Internal diameter unless specified OD (outside diameter).
