Doulton Ceramic Water Filter Installation Instructions

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Doulton Sterasyl Filters

Doulton Sterasyl Ceramic Bacteria Filter Instructions

Ceramic Candle Installation and Operating Instructions

Installation (all elements for cold water use only)

When inserting a filter element for the first time or replacing a used element with a new one, it is important to condition the filter with the incoming water using the following procedure:

1. Place the sealing washer over the threaded mount

2. Fit the candle into the housing ensuring that a seal is made.  DO NOT OVER TIGHTEN.  Then seal the housing.

3.  Open the isolation valve/tap to allow water to flow through the filter to waste for 10 minutes.

4.  Allow the filter to stand unused overnight.

5.  Open the tap again for 2 minutes and allow water to run to waste.

The filter is now ready for use.

Note; If the filter is left to stand for more than 3 days then it is recommended that water be run to waste for 1 minute before using.

Filter Cleaning Instructions

If the incoming water contains particles, then the flow from the filter will gradually reduce. If this occurs, then the flow can be restored by cleaning the candle. Remove the ceramic filter from the housing taking care to prevent contamination of the end of the mount by contact with unfiltered water or dirty hands.  Take a or plastic scrub pad (Scotchbrite or similar) in one hand and cup it around the circumference of the filter element at the top - next to the mount.  Under running water quickly rotate the element with the other hand applying gentle even pressure with the pad.  Slowly work down the length of the filter element ensuring that the cleaning is uniform on the whole candle. You should remove a small layer of ceramic material to effectively clean the cartridge. This will show up as white powder on the scrub pad.

Note: Always wash your hands thoroughly before and after cleaning your filter and never use soap or detergent.


Sterasyl, Super Sterasyl, Supercarb and Ultracarb candles contain silver and do not require sterilization.

Standard grade candles require sterilization after cleaning.  To do this place the candle in a container of water and boil for 20 minutes. Allow the candle to cool before replacing it within the filter housing

Supercarb, Ultracarb and Super Sterasyl candles contain water treatment media to remove Chlorine taste and other dissolved contaminants such as organic molecules or lead (Ultracarb only).  For optimum performance, water flow should be restricted to approximately 1 1/2 liters per minute.

Super Sterasyl candles contain loose carbon media, and black particles may be seen in the water which is run to waste.  This is normal and will clear as the water runs.

Fairey Industrial Ceramics Limited
Newcastle, Staffordshire, ST5 9BT England, Telephone: +44 1782 664420 Fax: +44 1792 664490

Specifications - Silver Impregnated Ceramic Microfilter

All Doulton® and British Berkefeld® ceramic filter elements are manufactured under International Standards Organisation (ISO) conditions. They have the highly consistent and controlled pore structure necessary to provide genuine sub micron filtration. All claims with regard to the performance of Doulton ceramic filter elements have been verified by independent laboratory testing.

Filtration Rating (percent particulate filtration efficiency)

bullet Absolute (defined as greater than 99.99 percent): 0.9 micron
bullet Nominal (defined as greater than 99.9 percent): 0.5 to 0.8 micron

Flow Rate

bullet Liters per minute: 5
bullet US gallons per minute: 1.33

Quality Approval

bullet NSF approved version available
bullet W S approved product
bullet NSF turbidity reduction std. 53: greater than 98 percent

Pathogenic Organisms (percent bacterial removal)

bullet E. coli: greater than 99.99 percent
bullet Vibrio Cholerae (Cholera): greater than 99.99 percent
bullet Shigella: greater than 99.999 percent
bullet Salmonella Typhi (Typhoid): greater than 99.999 percent
bullet Klebsiella Terrigena: greater than 99.999 percent

Pathogenic Organisms (percent cyst removal)

bullet Cryptosporidium: greater than 99.999 percent
bullet Giardia: greater than 99.999 percent

Working Pressure

bullet Minimum: 10 psi
bullet Maximum: 125 psi

Working Parameters

bullet Temperature Range: 5 to 38 degrees C
bullet pH: 5.5 to 9.5
bullet Suitable for use in gravity filters

Capacity (minimum)

bullet Liters: 10,000
bullet US gallons: 2600

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