GE P&W AK Series User Manual
Fact Sheet
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FS1263EN.doc Nov-13
Membrane
A-series, thin-film membrane (TFM*)
Model
Average
permeate flow
gpd (m3/day)
1,2
Average NaCl
rejection
1,2
Minimum NaCl
rejection
1,2
AK2540TM
710 (2.7)
99.0%
98.0%
AK4040C
2,500 (9.5)
99.0%
98.0%
AK4040FM
2,200 (8.3)
99.0%
98.0%
AK4040FM, WET
2,200 (8.3)
99.0%
98.0%
AK4040TM
2,200 (8.3)
99.0%
98.0%
AK8040C
9,900 (37.5)
99.0%
98.0%
AK8040F
9,600 (36.3)
99.0%
98.0%
AK8040F, WET
9,600 (36.3)
99.0%
98.0%
AK8040F 400
10,500 (37.9)
99.0%
98.0%
AK8040F 400 WET
10,500 (39.7)
99.0%
98.0%
Model
Membrane
area
ft2 (m2)
Outer wrap
Part
Number
AK2540TM
27 (2.5)
Tape
1206802
AK4040C
95 (8.8)
Cage*
1223696
AK4040FM
85 (7.9)
Fiberglass
3039082
AK4040FM, WET
85 (7.9)
Fiberglass
3044157
AK4040TM
85 (7.9)
Tape
3039149
AK8040C
380 (35.3)
Cage*
1206819
AK8040F
365 (33.9)
Fiberglass
3039160
AK8040F, WET
365 (33.9)
Fiberglass
3044153
AK8040F 400
400 (37.2)
Fiberglass
3039161
AK8040F 400 WET
400 (37.2)
Fiberglass
3039162
AK Series
Low Energy Brackish Water RO Elements
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 psi (689 kPa).
Table 1: Element Specification
Figure 1: Element Dimensions Diagram - Female
1
Average salt rejection after 24 hours operation. Individual flow rate may vary
+25%/-15%.
2
Testing conditions: 500ppm NaCl solution at 115psi (793kPa) operating pres-
sure, 77°F (25°C), pH7.5 and 15% recovery.
Figure 2: Element Dimensions Diagram - Male
Model²
Dimensions, inches (cm)
Boxed
A
B1
C3
Weight
lbs (kg)
AK2540*M
40.0
(101.6)
0.75
(1.9) OD
2.4
(6.1)
5
(2.3)
AK4040C
40.0
(101.6)
0.625
(1.59)
3.9
(9.9)
8
(3.5)
AK4040*M
40.0
(101.6)
0.75
(1.9) OD
3.9
(9.9)
8
(3.5)
AK4040*M WET
40.0
(101.6)
0.75
(1.9) OD
3.9
(9.9)
8
(3.5)
AK8040*, AK8040* 400
40.0
(101.6)
1.125
(2.86)
7.9
(20.1)
32
(14.5)
AK8040*, AK8040* 400 WET
40.0
(101.6)
1.125
(2.86)
7.9
(20.1)
35
(16)
Typical Operating Pressure
100 psi (689 kPa)
Typical Operating Flux
10-20 GFD (15-35LMH)
Maximum Operating Pressure
400 psi (2,756 kPa)
Maximum Temperature
Continuous operation: 122°F (50°C),
Clean In Place (CIP): 122°F (50°C)
pH Range
Optimum rejection: 7.0-7.5,
Continuous operation: 4.0-11.0,
Clean In Place (CIP): 2.0-11.5
Maximum Pressure Drop
Over an element: 12 psi (83 kPa)
Per housing: 50 psi (345 kPa)
Chlorine Tolerance
1,000+ ppm-hours,
dechlorination recommended
Feedwater
NTU < 1
SDI < 5
Table 2: Dimensions and Weight
Table 3: Operating and CIP parameters
1
Internal diameter unless specified OD (outside diameter).
² These elements are bagged dried, unless specified WET, before shipping.
3
The element diameter (dimension C) is designed for optimum performance in GE
pressure vessels. Others pressure vessel dimension and tolerance may result in
excessive bypass and loss of capacity.
Page 2 FS1263EN
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