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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 o
r
technical specification. 3M does not guarantee the accuracy of this information.
If any 3M products described in this literature are defective in material o
r
workmanship, 3M will replace them at no charge. THERE ARE NO OTHE
R
WARRANTIES FOR THESE PRODUCTS, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This
Performance Data
Loading Capacity
Product Number 742B 743B 744B 745B 746B 747B 748B 749B
Pounds at 30 gpm 8.9 13.4 13.3 13.3 13.7 16.1 17.3 17.5
Kilograms at 7 cu m/hr 4.0 6.1 6.0 6.0 6.2 7.3 7.8 7.9
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% 1 2 5 10 15 25 40 70
Efficiency @ 95% 0.9 1.1 2.5 8 9 13 24 43
Efficiency @ 90% 0.8 0.9 1.7 6 8 10 19 35
Efficiency @ 75% <0.7 0.7 1.5 3.5 6 8 13 24
Efficiency @ 50% <0.7 <0.7 1.1 1.5 4.0 4.5 8 14
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 0.3 0.2 0.1 0.1 0.1 0.05 0.05 0.04
∆p @ 20 gpm 0.7 0.5 0.2 0.2 0.1 0.11 0.10 0.08
∆p @ 30 gpm 1.0 0.9 0.4 0.3 0.2 0.21 0.18 0.15
∆p @ 40 gpm 1.3 1.1 0.6 0.4 0.4 0.30 0.25 0.20
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.
Product Specifications
Micron Ratings:
Product Initial
Number Efficiency
742B30 1 micron @ 99%
743B30 2 micron @ 99%
744B30 5 micron @ 99%
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 16.5 cm
Inside Diameter:
1.6 inches 4 cm
Length:
28.75 inches 73.0 cm
226 O-ring Inside Diameter:
2 inches 5 cm
226 O-ring Thickness:
0.14 inches 0.35 cm
Operating Condition:
Maximum Operating Temperature:
160F 70C
Recommended Flow: (in water)
30 gpm 6.8 cu m/hr
Suggested Maximum Flow: (in water)
742B30-743B30 – 45 gpm 10 cu m/hr
744B30-749B30 – 60 gpm 14 cu m/hr
Suggested Maximum Differential Pressure:
742B30 35 psid 2.4 bar
743B30 - 749B30 50 psid 3.4 bar
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.
3
Filtration Products
3M Center, Building 60-1S-16
St. Paul, MN 55144-1000
800-648-3550
© 3M 2003 70-0708-1755-9
warranty does not apply to damage or defects resulting from improper use,
storage or maintenance of these products. User must determine whether the 3M
p
roducts described in this literature are fit for a particular purpose, suitable fo
r
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.