GE P&W Duraslick Series User Manual
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FS1269EN.doc Nov-13
Fact Sheet
Membrane
Thin-film membrane (TFM*)
Model
Average
permeate flow
gpd (m3/day)
1,2
Average NaCl
rejection
1,2
Minimum NaCl
rejection
1,2
Duraslick RO2540
550 (2.1)
98.6%
97.0%
Duraslick RO4040
1,900 (7.2)
98.6%
97.0%
Duraslick RO8040
7,700 (29.1)
98.6%
97.0%
Model
Average
permeate flow
gpd (m3/day)
1,2
Average
MgSO4
rejection
1,2
Minimum
MgSO4
rejection
1,2
Duraslick NF2540
600 (2.3)
98.6%
96.0%
Duraslick NF4040
2,400 (9.1)
98.6%
96.0%
Duraslick NF8040
8,600 (32.6)
98.6%
96.0%
Model
Spacer
mil (mm)
Active area
ft2 (m2)
Outer wrap
Part
number
Duraslick RO2540
30 (0.76)
24 (2.2)
Fiberglass
1231055
Duraslick RO4040
30 (0.76)
80 (7.4)
Fiberglass
1231048
Duraslick RO8040
30 (0.76)
355 (33.0)
Fiberglass
1231014
Duraslick NF2540
30 (0.76)
24 (2.2)
Fiberglass
1234385
Duraslick NF4040
30 (0.76)
80 (7.4)
Fiberglass
1234307
Duraslick NF8040
30 (0.76)
355 (33.0)
Fiberglass
1234182
Duraslick* Series
Low Fouling NF/RO Elements
Duraslick* is a family series of membrane elements
engineered for use with fouling-prone brackish water applications and industrial effluent treatment
before reuse or discharge. Duraslick* is designed to
utilize an innovative three-layer membrane, of
which a proprietary middle layer creates extreme
smoothness, and provide a high rejection of salts.
Independent studies have demonstrated that Duraslick* elements are superior to standard polyamide spiral wound membrane elements for salt
removal in fouling environment. Duraslick* elements retrofit existing systems to obtain stable
permeate flux, reduced overall energy usage, increased membrane service life and an extension of
operating time between required cleanings, which
in turn reduces expenditures on required chemicals.
Table 1: Element Specification
1
Average salt rejection after 24 hours operation. Individual flow rate may vary
+25%/-25%.
2
Testing conditions: 2,000ppm MgSO4 solution at 110psi (760kPa) operating
pressure, 77°F (25°C), pH7.5 and 15% recovery.
1
Average salt rejection after 24 hours operation. Individual flow rate may vary
+25%/-25%.
2
Testing conditions: 800ppm NaCl solution at 225psig (1,551 kPa) operating
pressure, 77°F (25°C), pH7.5 and 15% recovery.
Figure 1: Element Dimensions Diagram – 8040
Figure 2: Element Dimensions Diagram – 2540 & 4040
Table 2: Dimensions and Weight
Model1
Dimensions, inches (cm)
Boxed
A
B2
C3
Weight
lbs (kg)
Duraslick XX2540
40.0
(101.6)
0.75
(1.9) OD
2.4
(6.1) 4 (1.8)
Duraslick XX4040
40.0
(101.6)
0.75
(1.9) OD
3.9
(9.9) 9 (4.1)
Duraslick XX8040
40.0
(101.6)
1.125
(2.86)
7.9
(20.0)
29
(13.2)
Typical Operating Pressure
Duraslick RO: 200psi (1,379 kPa)
Duraslick NF: 100psi (690 kPa)
Typical Operating Flux
10-15GFD (15-25LMH)
Maximum Operating Pressure
600psi (4,137 kPa)
Maximum Temperature
Continuous Operation: 122°F (50°C)
Duraslick RO Clean-In-Place: 122°F (50°C)
Duraslick NF Clean-In-Place: 104°F (40°C)
pH Range
Duraslick RO:
Continuous Operation: 4.0 – 10.0
Clean-In-Place (CIP): 2.0 – 10.5
Duraslick NF:
Continuous Operation: 3.0 – 9.0
Clean-In-Place (CIP): 2.0 – 10.5
Maximum Pressure Drop
Over an element: 12psi (83 kPa)
Per housing: 50psi (345 kPa)
Chlorine Tolerance
500 ppm-hrs,
dechlorination recommended
Feedwater
NTU < 1
SDI < 5
1
These elements are dried and bagged before shipping.
2
Internal diameter.
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.
Table 3: Operating and CIP parameters
Page 2 FS1269EN
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