2025 Nelsen Corporation Catalog - Catalog - Page 129
KDF-55 Process Medium
KDF-85 Process Medium
KDF-55 process medium is an effective chlorine removal agent
used in point-of-entry treatment of municipal water supplies. This
unique, innovative and environmentally responsible medium consists
of high purity copper-zinc granules that use redox (the exchange of
electrons) in patented products to effectively reduce/remove chlorine
and heavy metals and control microorganisms in potable water.
The most critical aspect of pressure filter performance is the
relationship of flow rate to surface of KDF-55 process medium.
Inaccurate sizing is the most common reason for trouble in filter
systems. The nominal flow rate in the service cycle depends on
surface area available. Service flow rates with KDF-55 process
medium, however, may be calculated at 15 gpm per square foot
of surface area. This is three times the effective flow rate of other
filter media.
KDF-85 process medium is an effective iron(ferrous) and hydrogen
sulfide (H2S) removal agent that may be used alone or to protect
existing water filtration/purification technologies in point-of-entry
treatment of groundwater supplies. This unique, innovative and
environmentally responsible medium consists of high purity copperzinc granules that use redox (the exchange of electrons) in patented
products to effectively reduce/remove iron and hydrogen sulfide
and heavy metals and control microorganisms in potable water.
KDF-85 medium permits removal of iron and H2S without the use
of chemicals.
The most critical aspect of pressure filter performance is the
relationship of flow rate to surface of KDF-85 process medium.
Inaccurate sizing is the most common reason for trouble in filter
systems. The nominal flow rate in the service cycle depends on
surface area available. Service flow rates with KDF-55 process
medium, however, may be calculated at 15 gpm per square foot
of surface area. This is three times the effective flow rate of other
filter media.
KDF Process Medium Specifications
Medium composition................ atomized high purity copper/zinc alloy
Color
KDF 55 ......................................................................................golden
KDF 85 ..........................................................................reddish brown
Physical form .............................................................................granular
Screen size (U.S. mesh) ...........................................................-10 + 100
Particle size range.............................................. 0.149 mm to 2.00 mm
Apparent density ...............................................2.2-2.7 g/cc (171 lbs/ft3)
Turbidity .......................................................................................20 ntu
Skid....................................................... 48-1/3 cu. ft. drums (2,736 lbs.)
Odor and tastes.............................................................................. none
Recommended Operating Conditions (use 3-cycle valve):
Service flow ............................................................................15 gpm/ft2
Backwash for 10 min. @ ........................................................30 gpm/ft2
Purge/rinse for 3 min. @ ........................................................ maximum
Bed expansion, backwash ......................................................10 to 15%
Free board....................................................................................... 20%
Minimum bed depth (6" dia.) .................................................. 10 inches
pH range: drinking water ....................................................... 6.5 to 8.5
Water temperature, influent ..............................................35° to 212°F.
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Resins, Media & Chemicals
KDF Process Media
KDF Process Media
The MediaGuard Cartridge System provides for high-performance filtration in water softeners. Utilize
KDF-55 for reduction of chlorine and heavy metals. For reduction of hydrogen sulfide and/or iron-laden
water, use KDF-85.
KDF process media have earned NSF certification (ANSI/NSF Standard 61 for drinking water system
components–health effects and Standard 42).
KDF-55
KDF-55
KDF-55 granules are most effective in removing chlorine and water-soluble heavy metals.
KDF-55
1/3 Cubic Foot Drum (57 lbs)
KDF-55-16
1/6 Cubic Foot Box (30 lbs)
KDF-55-CP4
4 lbs. - Fills one CANPRO-4 (4.2 lbs)
KDF-85
KDF-85 is most effective in removing iron and hydrogen sulfide.
KDF-85
1/3 Cubic Foot Drum (57 lbs)
KDF-85-16
1/6 Cubic Foot Box (30 lbs)
KDF-85-CP4
4 lbs. - Fills one CANPRO-4 (4.2 lbs)
KDF-85
Call Nelsen Toll-Free from Anywhere in the U.S. - 800.362.9686
All prices and products subject to change without notice. ©Nelsen Corporation
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