British Berkefeld 7″ Ultra Sterasyl Ceramic Water Filters (Set of 2)
The British Berkefeld 7-inch Ultra Sterasyl ceramic filters deliver powerful multi-stage filtration designed specifically for gravity water filtration systems.
Each filter features a micro-porous ceramic outer shell that physically blocks bacteria, cysts, and sediment. Inside the filter, activated carbon filtration media helps reduce chlorine, organic chemicals, and other contaminants while improving the taste and clarity of drinking water.
Ultra Sterasyl filters are certified by NSF International to four drinking water standards, verifying their performance through rigorous third-party testing.
This set of two filters provides reliable ceramic filtration for everyday drinking water while maintaining a simple gravity-powered design that requires no electricity or plumbing.
Ultra Sterasyl filters are widely used for home kitchens, emergency preparedness, off-grid living, camping, and everyday drinking water filtration.
NSF Certified Filtration
British Berkefeld Ultra Sterasyl filters are certified by NSF International to four drinking water standards, confirming their performance for contaminant reduction and material safety.
✔ NSF/ANSI Standard 42 – Reduction of chlorine, taste, and odor
✔ NSF/ANSI Standard 53 – Certified for health effects contaminant reduction such as lead
✔ NSF/ANSI Standard 372 – Certified lead-free materials
✔ NSF/ANSI Standard 401 – Reduction of emerging contaminants
These certifications confirm that the filters meet strict third-party testing standards for drinking water safety and filtration performance.
Key Benefits
✔ Helps remove bacteria, cysts, and sediment
✔ Reduces chlorine and organic chemicals
✔ Improves taste and odor of drinking water
✔ Helps reduce lead and heavy metals
✔ Helps reduce microplastics and turbidity
✔ Gravity powered – no electricity required
✔ Cleanable ceramic shell helps extend filter life
✔ Helps retain beneficial minerals naturally found in water
Contaminant Reduction
| Contaminant | Reduction |
|---|---|
| Bacteria | ✔ |
| Cysts | ✔ |
| Chlorine | ✔ |
| Lead | ✔ |
| Microplastics | ✔ |
| Sediment & Turbidity | ✔ |
| Organic Chemicals | ✔ |
| Taste & Odor | ✔ |
Ceramic gravity filters combine mechanical ceramic filtration with activated carbon, helping reduce bacteria, sediment, chlorine, heavy metals, and other contaminants from drinking water.
Specifications
| Feature | Details |
|---|---|
| Manufacturer Model | W9121226 |
| Filter Type | Ceramic Gravity Filter |
| Filter Length | 7 inches |
| Filter Capacity | 800 gallons per filter |
| Total Capacity | Up to 1,600 gallons per set |
| Replacement Interval | Replace every 6–12 months depending on water quality |
| Weight | 1.6 lbs (set of two) |
| Product Dimensions | 3 × 3 × 7 inches per filter |
| Color | White |
| Country of Origin | Made in Britain |
Installation: Upper chamber of gravity filtration systems
Each filter includes the wing nut and washer required for installation.
Filter Life
Each Ultra Sterasyl ceramic filter can treat approximately 800 gallons of water before replacement is recommended.
A set of two filters can treat up to 1,600 gallons, typically lasting 6–12 months depending on water quality and usage.
The ceramic outer shell can also be cleaned periodically to help maintain filtration performance.
Designed for British Berkefeld Gravity Systems
The Ultra Sterasyl ceramic filter is specifically designed for British Berkefeld gravity filtration systems.
The ceramic outer shell provides mechanical filtration that physically blocks bacteria and sediment, while the internal activated carbon helps improve taste and reduce chlorine and organic compounds.
This combination creates a reliable gravity filtration system that works without electricity or plumbing.
System Compatibility
The number of filters used depends on the gravity system size.
| System | Number of Filters |
|---|---|
| Baron Berkefeld | 1 Filter |
| Duchess Berkefeld | 2 Filters |
| Duke Berkefeld | 2–4 Filters |
| Prince Berkefeld | 2–4 Filters |
| King Berkefeld | 2–8 Filters |
| Borosilicate Glass System | 2–4 Filters |
| Stoneware System | 2–4 Filters |
Using multiple filters increases filtration speed and total system capacity.
Gravity Water Filter Comparison
Many gravity filtration systems appear similar but use different filtration technologies.
| System | Filter Technology | Bacteria Filtration | Fluoride Reduction |
|---|---|---|---|
| British Berkefeld / Doulton | Ceramic + Carbon | ✔ | Optional |
| Berkey | Carbon block | Limited | Optional add-on |
| Alexapure | Carbon composite | Limited | ✔ |
| Culligan Gravity Filters | Carbon | Limited | Some models |
Ceramic filtration remains popular because the micro-porous ceramic shell physically blocks bacteria and sediment, while carbon media improves taste and reduces chemicals.
What’s Included
• 2 × British Berkefeld 7″ Ultra Sterasyl Ceramic Filters
• 2 × Installation wing nuts and washers
✔ Ideal for gravity water filtration systems that require reliable ceramic filtration for bacteria, chlorine, sediment, and contaminant reduction.
Sonja –
Filters were received promptly. Price was reduced, and the filters work well to improve the taste of the awful county water.
Marc Grant –
Product received quickly!
Leticia Suarez –
Fast delivery
Anonymous –
Great product
Mary T. –
Great filters, great delivery time too
Carol G. –
Excellent product, fast delivery and prompt communication. Thank you.
Anonymous –
Quick and efficient like always
Susan –
Arrived quickly!
Anonymous –
We have been using a Travel Berkey with carbon block filters for about 10 years for home use and camping. Needing new filter elements I decided to try these Ceramic filters, based on pricing, better filtration ratings, and the fact they are manufactured in the UK rather than Asia.
We’ve been using them for about a month now at home and are pleased with their performance so far. We find we’re drinking more water due to the improved taste.
Hopefully they’ll perform as well on and down the road. Considering purchasing a second set as backups.
Gerald –
Filters were shipped quickly and the price was the best on the internet!
Karl –
Works well. Made in UK gives me comfort, unlike the made-in-India Berkey clone sold out of New York.
Patricia Blum –
Can’t get thumscrews undone
Renee M. –
Perfect!
Teresa –
I’m still hoping these will “cleanse “ my water better. The level of contamination is worse in the berkey than the tap.
Maybe I shouldn’t have bought the water tester. That way I wouldn’t have known and just drank it anyway!