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Nanofiltration Membranes -  NF9  Membrane Elements


NF Membrane Model No. Permeate Flow Rate Size
(Dia" × Length")
Average Salt Rejection (%) Average Hardness Rejection (%)
Gals/Day Liters/Day
M-N1812A9 36 136 1.8 × 12 90 97+
M-N2514A9 175 662 2.5 × 14 90 97+
M-N2521A9 250 668 2.5 × 21 90 97+
M-N2540A9 600 1602 2.5 × 40 90 97+
M-N4014A9 450 1203 4.0 × 14 90 97+
M-N4021A9 800 3028 4.0 × 21 90 97+
M-N4040A9 2000 7570 4.0 × 40 90 97+

Note:  Performance specifications based on 2,000 mg/l sodium chloride, 150 psi (1MPa) applied pressure, 77°F (25°C) feed water temperature, pH 8 and 10% recovery.  Element permeate flow may vary ± 15%.

Nanofiltration Membrane

NF Membrane DIMENSIONS

Model No.
L
Inches Cm
I
Inches Cm
D
Inches Cm
M-N1812A9 11.63 29.5 10.0 25.4 1.8 4.6
M-N2514A9 14 35.6 12 30 2.5 6.4
M-N2521A9 21 53.3 19 48 2.5 6.4
M-N2540A9 40 101.6 38 96 2.5 6.4
M-N4014A9 14 35.6 12 30 3.9 9.9
M-N4021A9 21 53.3 19 48 3.9 9.9
M-N4040A9 40 101.6 38 96 3.9 9.9

RECOMMENDED OPERATION CONDITIONS for Nanofiltration Membranes

  • Maximum operating pressure
300 psi
  • Maximum feed flow rate - 
    • 2.5" Elements
    • 4" Elements

6 gpm
17 gpm
  • Maximum operating temperature
113° F (45° C)
  • Maximum feed water turbidity
1 NTU
  • Maximum feed water SDI (15min)
4
  • Chlorine tolerance
<0.1 ppm
  • Feedwater pH range, continuous operation
3-10
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