British Berkefeld® 8.5 Ltr Standard - Doulton® 7" Super Sterasyl® Ceramic + 304 SS Spigot

From an historical perspective since 1827, gravity water filtration was birthed with Doulton® and British Berkefeld® to the benefit of millions, even today continuing to serve in over 150 countries.

The Doulton® and British Berkefeld® gravity systems offer an effective solution for the need in today's world to filter drinking water, coupled with the benefits of contact time with the filtration media. Doulton® and British Berkefeld® heritage and commitment to water filtration is built on years of innovation and the highest international standards to ensure a quality product, every time.

Manufactured from the best food grade 304 Stainless Steel in the UK, the 8.5 Ltr bottom chamber offers to serve a family 1 - 4 persons.

Fully assembled the unit stands 480mm high with a base diameter of 215mm

For storage and travelling purposes, the top chamber nests inside the bottom chamber to a height of 330mm

What comes standard in the box?  

Standard British Berkefeld® System includes;  

2 x Doulton® 5" Super Sterasyl® Ceramic Filters
1 x Upper and 1 x Lower 304 stainless steel chambers
1 x 304 Stainless steel lid and knob
1 x Berkey 304 Stainless Steel Spigot Spigot
1 x Rubber gasket to protect the base
2 x Wingnuts (To fasten the 7" Super Sterasyl® Ceramic Filters in place)
2 x Washers (To seal the 7" Super Sterasyl® Ceramic Filters in upper chamber)

Performance benefits

  • Highly effective barrier to filter particles and pathogens for maximum protection
  • Long life and long-term value, easy to clean and replace filters ensuring a 6-12 month quality lifespan
  • 100% natural ceramic materials and activated carbon
  • Healthy mineral preservation during the filtration process
  • Anti-bacterial properties inhibit microbiological growth within the ceramic element
  • Multi-stage filtration combines features to help target chlorine and bacteria
  • Affordability with no power required to install and long-term efficient performance achieved
  • Environmentally friendly processes to reduce carbon footprint and waste reduction of plastic bottles
  • Versatility of portable indoor or outdoor gravity-fed systems, the choice is yours

To assure consistent quality and maintain rigid standards, Doulton® ceramic water filtration systems are backed by stringent in-house quality control procedures. Accredited by BS EN ISO 9001 international quality standards, we also hold the coveted NSF® and WRAS certification.

Doulton® 5" Super Sterasyl® Ceramic Filters

Model ID                          W9121020
UPC                                 799705701892
Actual Size (in)                 6 1/2 inches (length - includes screw) x 2  5/8 inches (outside diameter)
Actual Size (mm)             165mm x 67mm 
Thread Range                 1/4" BSP Long (33mm) Threaded Mount (Suits 14mm Hole)
Media                               Sterasyl ceramic media with Granular Activated Carbon core
Primary Filter Media         Ceramic with Carbon
Filter Life (gallons)            535
Filter Life (litres)                2,000
Filter Life (months)            6 - 12 months
Micron Rating (Nominal)   0.5 microns
Micron Rating (Absolute)  0.9 microns
Operating Temperature (°C)  5 - 30
Flow Rate (gp/hr)                .3
Flow Rate (lp/hr)               1.1
Includes                             Filter Candle, Wing Nut, Seal Washer
Additional Information       Ceramic portion of the filter is 5 inches. Threaded stem is 1.5 inches bring total length to 6.5 inches.

Filter Performance: Micro filtration of Bacteria, Cysts, Particles, Chlorine and Organics

3-Stage filtration process within the 1 cartridge

Stage 1 - Doulton Sterasyl Ceramic
This stage filters fine particulate matter, bacteria, cysts and turbidity.
Stage 2 The incorporation of silver locked within the ceramic structure gives enhanced bacteriostatic and self sterilising properties.
Stage 3 - (GAC) Granular Activated Carbon
Granular activated carbon takes out chlorine and organics improving taste and odour


Supersterasyl membrane: Used for microbiological removal. The only ceramic element in the world to meet the stringent NSF antimony and arsenic extraction test featuring:

  • >99.99% E.coli removal
  • Tested with live Cryptosporidium cyst to 100% removal far exceeding EPA three log cyst reduction requirements
  • 100% efficiency at 0.9 µm absolute (0.5 µm absolute ANSI standard)
  • > 98% efficiency at 0.2 µm
  • > 90% efficiency at 0.05 µm
  • < 0.07 NTU turbidity reduction

( µm = micron )

Recommended change frequency        2000 Ltrs / 12 months

Flow Rate                                                 1.1 Ltrs hour per candle

Pathogenic Organisms

% Bacteria Removal                                  99.99%
                                                                   Coli / Cholera / Shigella / Typhoid / Klebsiella Terrigena
% Cyst Removal                                        99.99%
                                                                   Cryptosporidium / Giardia
Free Chlorine Removal                               95.00%

Super Sterasyl® Lab Test Results