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Doulton 7" SuperSterasyl Candle Water Filter Element

Model #: W9121207

  (1) 7" Super Sterasyl will produce 7 gallons per day in a gravity filter.
  • Contaminant Removal: Pathogenic bacteria, Cysts, Sediment
  • Organic Chemicals: Pesticides, herbicides, organic solvents, trihalomethanes.
  • Chemicals: Chlorine

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 filter element is suitable for gravity and low pressure filter systems. 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.

Removes BacteriaRemoves CryptosporidiumRemoves GiardiaRemoves Chlorine

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 any contact with the GAC.

View a Comparison of
Doulton Cartridge Types

Larger, Imperial SuperSterasyl Candles are available. These larger elements fit in the same standard filter housing as the SuperSterasyl shown on this page.

View Larger Imperial Sterasyl Cartridge
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 6 months or when flow rate is noticeably lower
Recommended change frequency every 12 months
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)
  Some restrictions apply to the sale of ceramic filters in the states of CA, WI, MA & IA. Call for details.


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