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AMFOR® NF membrane elements are designed for process applications where a separation of solutes is desired. NF membrane is a durable membrane designed to reject organics with a molecular weight above 200 while passing monovalent salts, we also can produce sanitary NF membranes.

 

Product Specifications    

 Product Name  Active Surface
 Area ft2 (m2)
 Applied Pressure
 psig(bar)
 Flow rate
 gpd
Flow rate
l/h 
Stabilized Salt  
Rejection (%) 
 NF-1812 CaCl2  4(0.37)   70(5.0)   220  34.7  40~60
                MgSO4  200  31.5  >97
 NF-2540 CaCl2  28(2.6)    70(5.0)   1000  157.7  40~60
             MgSO4  850  134  >97
 NF-4040 CaCl2  82(7.6)    70(5.0)   2925  461.3  40~60
           MgSO4  2500  394.3  >97
 NF-2540FF CaCl2  28(2.6)    70(5.0)   1000  157.7  40~60
                   MgSO4  850  134  >97
 NF-3838FF CaCl2  80(7.4)    70(5.0)   2800  441.8  40~60
                    MgSO4  2400  378.7  >97
 NF-4040FF CaCl2  82(7.6)   70(5.0)  2825  461.3  40~60
                     MgSO4  2500  394.3  >97

 

1. Permeate flow and salt rejection based on the following test conditions: 500ppm CaCl2, 70psi (0.48MPa), 25 ℃,
    15%Recovery; 2000ppm MgSO4, 70psi (0.48MPa),  25 ℃.
2. Permeate flows for individual elements may vary +/-25%.

 

 

Product Type

Dimension--inches (mm)

A

B

C

D

NF-1812

11.74(298)

0.87(22)

0.68(17)

1.75(44.5)

NF-2540

40.0(1016)

1.19(30.2)

0.75(19)

2.40(61)

NF-3838

38.0(965.2)

---

0.83(21.1)

3.8(96)

NF-4040

40.0(1016)

1.05(27)

0.75(19)

3.9(99)

1 inch=25.4mm
 

 

Operation Limits

Membrane Type ............................................................................................................. Polyamide Thin-Film Composite
Maximum Operating Pressure ................................................................................................................ 600psi (41.0bar)
Maximum Pressure Drop ............................................................................................................................... 13psi (0.9bar
Maximum Operating Temperature ................................................................................................................... 113  (45℃)
pH Range, Continuous Operation ............................................................................................................................... 2-11
pH Range, Short-Term Cleaning (Max.@50℃) ........................................................................................................ 1-12
Maximum Feed water Turbidity .................................................................................................................................. 1NTU
Maximum Feed Silt Density Index ...................................................................................................................................... 5
Free Chlorine Tolerance ...................................................................................................................................  < 0.1ppm

 

 

 

 

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