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| Automatic
Backwashing Filters - Whole House Filter |
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A backwashing filter is
a water filter that cleans itself periodically by rinsing
away impurities it has filtered from water.
Although a backwashing
filter may look like a water softener and be the same
size, it's a different animal. Softeners are "ion
exchangers," not filters.
A backwashing filter is
a simple device that consists of a large tank called a
"mineral tank" that is filled with a a filtering
substance called a filter medium. (The plural is media.)
Water enters the top of the tank through a special control
valve and passes downward through the medium, which
removes impurities and holds them. Some media do not
hold impurities, but cause a change to occur. Calcite, for
example, increases the pH of acidic water. The filtered
water then enters a tube at the bottom of the mineral
tank, passes upward through the tube (called a riser), and
exits the filter via the control valve.
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- Fleck 2510 control valve
- Adjustable cycle times
- High backwash flow capability
- Poly wound mineral tank
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When the filter medium
is saturated with contaminants, the control valve
initiates a backwash. The backwash is an operation in
which water passes backward through the filter at a rapid
rate. It enters the tank at the bottom via the riser tube,
then passes upward through the filter medium, exiting at
the top, via the control valve. The rapid upward flow, in
addition to washing away stored impurities, fluffs and
resettles the medium bed, preparing it for another
filtering cycle.
Backwashing filters can
be filled with several types of medias to handle different
impurities that may be found in your water supply. Click
here for Media
Selection Guide
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General
Specifications
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WF10-25
U10 |
WF15-25
U15 |
WF25-25
U25 |
WF30-25
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Filtration1
(see "Filter Media" section for
applications) |
Less
Filter Media |
| Filter
Media Capacity (cu ft) |
1.00 |
1.50 |
2.50 |
3.00 |
| Underbed
"D" Gravel Required (pounds) |
20 |
20 |
50 |
50 |
| Mineral
Tank (polyglass) |
9x48 |
10x54 |
13x54 |
14x65 |
| Service
Flow Rate - Continuous2 (gpm) |
4 |
5 |
8 |
9 |
| Service
Flow Rate - Intermittent2 (gpm) |
6 |
7 |
10 |
11 |
| Backwash
Flow Rate3 (gpm) "WF" units
only |
5.0 |
5.0 |
7.0 |
10.0 |
| Gallons
Used/Backwash "WF" units only |
100 |
100 |
140 |
200 |
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Space
Required (DxWxH
inches)
WF
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9x11x56 |
10x12x62 |
13x13x62 |
14x14x74 |
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U |
9x11x52 |
10x12x58 |
13x13x58 |
N/A |
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Approximate
Shipping Weight
(pounds)
WF
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27 |
32 |
40 |
49 |
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U
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20 |
25 |
33 |
42 |
| Note
1: See "Filter Media" section for
selection of proper media for your filtration
application. Note 2: Use of a flow control in
the Service Line is highly recommended. Note
3: Caution should always be used in sizing filters!
Always choose a unit by first satisfying the
Backwash requirement. Consult the factory or
your field sales person with questions. |
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Back to Filtration
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