Pentek DGD series

DGD SERIES
CARTRIDGES
DGD SERIES DUAL-GRADIENT
DENSITY CARTRIDGES
DGD-2501-20
DGD-2501 DGD-5005-20
DGD-5005 DGD-7525-20
DGD-7525
• Manufactured from 100% pure polypropylene
• Designed for purity and chemical compatibility
• Two separate gradient density layers enhance cartridge performance
• Three times the dirt-holding capacity of similar sized sediment cartridges
DGD Series cartridges are
manufactured from 100% pure
polypropylene and are sized for use
in our Big Blue® filter housings.
DGD Series cartridges are designed
for purity and will not impart taste,
odor or color to the liquid being
filtered. Additionally, the
polypropylene construction provides
superior chemical resistance and is
not prone to bacterial attack.
The DGD Series advanced design
combines selective “final filtration”
with appropriate “pre-filtration” to
achieve up to three times the dirtholding capacity of similar size
sediment cartridges and many more
times that of standard spun or
string-wound cartridges. This
performance enhancement is
achieved by combining two separate
gradient layers in one filter.
The larger diameter of the pre-filter
reduces the particle load to the post
filter, allowing it to operate at
higher velocities. The effective filter
depth is increased to a full 233% of
standard spun-polypropylene or
string-wound filters. This increased
depth provides for very high
particulate reduction efficiencies and
added loading capacity.
The unique design and performance
characteristics of the DGD Series
cartridges make them an excellent
choice for all residential, rural,
municipal and commercial
applications.
DGD SERIES
Dual-Gradient Density Cartridges
5.0
(0.35)
Percent Efficiency
99
-20
01
5
2
DDG
-20
05
50
D
-20
DG
25
5
7
DDG
98
95
90
80
70
60
4.5
(0.31)
Approximate Net Pressure Drop – psi (bar)
99.9
DGD-2501-20
4.0
(0.28)
DGD-5005-20
3.5
(0.24)
DGD-7525-20
3.0
(0.21)
2.5
(0.17)
2.0
(0.14)
DGD-2501
1.5
(0.1)
DGD-5005
1.0
(0.07)
DGD-7525
.5
(0.03)
0
0
10
20
30
40
50
60
70
0
80
Particle Size (Microns)
2
4
6
8
10 20 30 40 50
(7.6) (15.1) (22.7) (30.3) (37.9) (75.7) (113.6) (151) (189)
Flow Rate – gpm (L/min)
Tested and Certified by NSF International to NSF/ANSI Standard 42 for
material requirements only.
Cartridge Specifications and Performance Data
Model
DGD-2501
DGD-2501-20
DGD-5005
DGD-5005-20
DGD-7525
DGD-7525-20
Maximum
Dimensions
Micron Rating*
(Nominal)
4-1/2" x 10"
Pre-filter: 25
4-1/2" x 20"
Pre-filter: 25
4-1/2" x 10"
Pre-filter: 50
4-1/2" x 20"
Pre-filter: 50
4-1/2" x 10"
Pre-filter: 75
4-1/2" x 20"
Pre-filter: 75
(114 mm x 254 mm)
Post Filter: 1
(114 mm x 508 mm)
Post Filter: 1
(114 mm x 254 mm)
Post Filter: 5
(114 mm x 508 mm)
Post Filter: 5
(114 mm x 254 mm)
Post Filter: 25
(114 mm x 508 mm)
Post Filter: 25
Initial ∆P (psi)
@ Flow Rate (gpm)
<1 psi @ 10 gpm
(<0.1 bar @ 38 L/min)
<1 psi @ 20 gpm
(<0.1 bar @ 76 L/min)
<1 psi @ 10 gpm
(<0.1 bar @ 38 L/min)
<1 psi @ 20 gpm
(<0.1 bar @ 76 L/min)
<1 psi @ 10 gpm
(<0.1 bar @ 38 L/min)
<1 psi @ 20 gpm
(<0.1 bar @ 76 L/min)
* Based on manufacturer’s internal testing
Materials of Construction
• Filter Media
• Temperature Rating
Polypropylene
40˚F to 145˚F (4.4˚C to 62.8˚C)
WARNING: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
502 Indiana Avenue • P.O. Box 1047 • Sheboygan, Wisconsin 53082-1047
Customer Service: 800-645-0267 • Fax: 888-203-7361 • supportspecialist@pentekfiltration.com
International: 920-457-9435 • Fax: 920-457-2417 • international@pentekfiltration.com
© 2004 Pentair Water Treatment
www.pentekfiltration.com
Printed in U.S.A. 01/04 310061
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