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7" Doulton Imperial Super Sterasy Candle Water Filter Element
Model #: W9121302

Doulton Imperial Super Sterasyl Candles are available as replacement/upgrade candles for Doulton, British Berkefeld, and other Gravity Filters.

Imperial Candles are not available as original equipment in British Berkeld or Doulton Gravity Filters. They are only available as after market upgrades, even though these are Doulton Branded Products.

Doulton

Doulton Ceramic Filter Elements have been trusted by relief organizations around the globe for over 150 years. These filters were developed in 1850 to remove disease causing bacteria from London's Thames River.

This cleanable ceramic water filter element is designed to reduce suspended solids, pathogenic bacteria, organic chemicals, and improve taste and odor. The 7" Super Sterasyl ceramic element is available only as a "candle" (fitted with a threaded plastic cap on one end).

The bore of the filter ceramic candle contains granular activated carbon to reduce organic chemicals and improve the color, taste, and odor of drinking water.

This filter element is suitable for gravity and low pressure filter systems; it is not recommended for high pressure (high flow rate) systems. If used in pressure filters, the GAC granules may shift and "channelize" which could allow water to flow through the filter without and contact with the GAC.

Contaminant Removal: Pathogenic bacteria, Cysts, Sediment

Organic Chemicals: Pesticides, herbicides, organic solvents, trihalomethanes.

Chemicals: Chlorine

Maximum working pressure 125 psi (8.6 bars)
Maximum working temperature 100 °F (37.8 °C)
Minimum working temperature 40 °F (4.4 °C)
Recommended cleaning frequency every 3 months or when flow rate is noticeably lower
Recommended change frequency every 6 months or 2000 Gallons, whichever is sooner
Contaminant Removal The great majority of pathogenic (disease causing) bacteria and cysts are larger than one µ. The pore size of the ceramic filter element is controlled so that it will remove all suspended matter larger than 0.9 µ.
Pathogenic Bacteria Chorela, Typhoid, Salmonella, Serratia, E. Coli, Fecal Coliform: >99.99% removal
Cysts Cryptosporidium parvum and Giardia lamblia: 100% removal (based on tests by Arizona State University)
Sediment Down to 0.9 µ, 100%; 0.5-0.8 µ with a filter efficiency of >99.99% (based on tests by Spectrum Laboratories, Minneapolis, MN)
Organic Chemicals Pesticides, herbicides and organic solvents
Metals Iron, Aluminum
Taste & Color Hydrogen Sulfide, Iron, Chlorine, etc.

Some restrictions apply to the sale of ceramic filters in the states of CA, WI, MA & IA. Call for details.

W9121302

Model #: W9121302
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