Nanofiltration Membranes: NF5 Membrane Elements

NF Membrane Model No.	Permeate Flow Rate		Size (Dia" × Length")	Average Salt Rejection (%)	Average Hardness Rejection (%)	Specification Sheets
NF Membrane Model No.	Gals/Day	Liters/Day	Size (Dia" × Length")	Average Salt Rejection (%)	Average Hardness Rejection (%)	Specification Sheets
M-N1812A5	36	136	1.8 × 12	50	97+
M-N2514A5	175	662	2.5 × 14	50	97+
M-N2521A5	250	668	2.5 × 21	50	97+
M-N2540A5	600	1602	2.5 × 40	50	97+
M-N4014A5	450	1203	4.0 × 14	50	97+
M-N4021A5	800	3028	4.0 × 21	50	97+
M-N4040A5	2000	7570	4.0 × 40	50	97+
M-N4040A5-D*	2000	7570	4.0 × 40	50	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 Element

DIMENSIONS OF NF MEMBRANES

Model No.

L
Inches	Cm

I
Inches	Cm

D
Inches	Cm

M-N1812A5

11.63

29.5

10.0

25.4

1.8

4.6

M-N2514A5

35.6

2.5

6.4

M-N2521A5

53.3

2.5

6.4

M-N2540A5

101.6

2.5

6.4

M-N4014A5

35.6

3.9

9.9

M-N4021A5

53.3

3.9

9.9

M-N4040A5

101.6

3.9

9.9

M-N4040A5-D

101.6

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	Up to 1 ppm
Feedwater pH range, continuous operation	4-11

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