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Performance Data
Loading Capacity
Product Number
742B 743B 744B 745B 746B 747B 748B 749B
Pounds at 30 gpm
Kilograms at 7 cu m/hr
Loading: The data above shows typical loading capacities of the different
micron rated filters. Loading capacity is determined by challenging a filter with
a dispersion of silica test dust in water at the recommended flow rate. Pressure
drop is monitored and testing is terminated at 50 psid (3.4 bar). (742B is
terminated at 35 psid– 2.4 bar.) The loading capacity reported is the dry weight
gain of the cartridge.
Particle Removal Efficiency (microns)
Product Number
742B 743B 744B 745B 746B 747B 748B 749B
Efficiency @ 99%
Efficiency @ 95%
Efficiency @ 90%
Efficiency @ 75%
Efficiency @ 50%
Efficiency: The 3M™ High Flow Filter Cartridges are rated using a silica test
challenge in water at 30 gpm (6.8 cu m/hr). The results reported are typical
initial efficiencies taken within ten minutes of the start of the test. For more
information on how 3M conducts its filter efficiency testing, please contact
Filtration Products Technical Service at 1-800-648-3550 .
Clean Pressure Drop Versus Flow Rate (psid)
Product Number
742B 743B 744B 745B 746B 747B 748B 749B
∆p @ 10 gpm
∆p @ 20 gpm
∆p @ 30 gpm
∆p @ 40 gpm
Pressure Drop: The 3M High Flow Filter Cartridges have low initial pressure
∆
drop (
p) in water as the chart indicates. The chart does not include the
pressure drop of the vessel.
IMPORTANT NOTICE: The information in this literature is based on tests
3M believes are reliable. It is not and should not be relied on as a product or
technical specification. 3M does not guarantee the accuracy of this information.
If any 3M products described in this literature are defective in material or
workmanship, 3M will replace them at no charge. THERE ARE NO OTHER
WARRANTIES FOR THESE PRODUCTS, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This
3
Filtration Products
3M Center, Building 60-1S-16
St. Paul, MN 55144-1000
800-648-3550
8.9
13.4 13.3 13.3
4.0
6.1
6.0
6.0
1
2
5
10
0.9
1.1
2.5
8
0.8
0.9
1.7
6
<0.7
0.7
1.5
3.5
<0.7
<0.7
1.1
1.5
0.3
0.2
0.1
0.1
0.7
0.5
0.2
0.2
1.0
0.9
0.4
0.3
1.3
1.1
0.6
0.4
13.7 16.1 17.3 17.5
6.2
7.3
7.8
7.9
15
25
40
70
9
13
24
43
8
10
19
35
6
8
13
24
4.0
4.5
8
14
0.1
0.05 0.05 0.04
0.1
0.11 0.10 0.08
0.2
0.21 0.18 0.15
0.4
0.30 0.25 0.20
warranty does not apply to damage or defects resulting from improper use,
storage or maintenance of these products. User must determine whether the 3M
products described in this literature are fit for a particular purpose, suitable for
user's application and meet user's performance expectations. 3M IS NOT
LIABLE FOR ANY LOSS OR DAMAGES, WHETHER DIRECT, INDIRECT,
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL, ARISING OUT OF THE
USE OF OR INABILITY TO USE ANY OF THESE PRODUCTS
REGARDLESS OF LEGAL THEORY.
Product Specifications
Micron Ratings:
Product
Number
742B30
743B30
744B30
745B30
10 micron @ 99%
746B30
15 micron @ 99%
747B30
25 micron @ 99%
748B30
40 micron @ 99%
749B30
70 micron @ 99%
Dimensions (Nominal):
Outer Diameter:
6.5 inches
Inside Diameter:
1.6 inches
Length:
28.75 inches
226 O-ring Inside Diameter:
2 inches
226 O-ring Thickness:
0.14 inches
Operating Condition:
Maximum Operating Temperature:
160F
Recommended Flow: (in water)
30 gpm
Suggested Maximum Flow: (in water)
742B30-743B30 – 45 gpm
744B30-749B30 – 60 gpm
Suggested Maximum Differential Pressure:
742B30
35 psid
743B30 - 749B30
50 psid
Disposal of used filters must comply with applicable
federal, state and local laws and regulations.
Order Information
To order contact your local 3M Filtration Products
distributor or call toll free 1-800-648-3550.
© 3M 2003
Initial
Efficiency
1 micron @ 99%
2 micron @ 99%
5 micron @ 99%
16.5 cm
4 cm
73.0 cm
5 cm
0.35 cm
70C
6.8 cu m/hr
10 cu m/hr
14 cu m/hr
2.4 bar
3.4 bar
70-0708-1755-9
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