Big Berkey Gravity Water Filter vs Platypus GravityWorks 4L Water Filter System
Big Berkey Gravity Water Filter vs Platypus GravityWorks 4L Water Filter System compared spec-by-spec. Filtration performance, flow rate, pricing, pros, cons, and our verdict on which water filter to buy.
| Specification | B — platypus Platypus GravityWorks 4L Water Filter System 8.6/10 $120 Check Price on Amazon $130
Save $10 | |
|---|---|---|
| Filter Type | gravity | hollow fiber membrane gravity |
| Capacity Gallons | 2.25 | — |
| Flow Rate Gph | 3.5 | — |
| Filter Life Gallons | 6,000 | 396 |
| Filter Elements Included | 2 | — |
| Max Filter Elements | 4 | — |
| Contaminants Removed | bacteria, protozoa, chlorine, pesticides, pharmaceuticals, heavy metals, VOCs | bacteria, protozoa, microplastics |
| Requires Power | No | No |
| Virus Removal | Yes | No |
| Material | 304 stainless steel | — |
| Height Inches | 19.25 | — |
| Diameter Inches | 8.5 | — |
| Weight | 7 lbs | — |
| Serves People | 1-4 | 1-6 |
| Pf2 Fluoride Compatible | Yes | — |
| Weight Oz | — | 11.7 |
| Capacity Liters | — | 4 |
| Total Storage Liters | — | 8 |
| Flow Rate | — | 1.75 L/min |
| Filter Life Liters | — | 1,500 |
| Pore Size | — | 0.2 micron |
| Bpa Free | — | Yes |
| Backflush Capable | — | Yes |
| Includes Bags | — | Yes |
| Dirty Bag Liters | — | 4 |
| Clean Bag Liters | — | 4 |
| Operating Temp | — | above freezing |
Buy the Big Berkey Gravity Water Filter
Best prices · Updated hourly
Buy the Platypus GravityWorks 4L Water Filter System
Best prices · Updated hourly
Who Should Buy the Big Berkey Gravity Water Filter?
The Big Berkey Gravity Water Filter is designed for gravity fed cabin, emergency preparedness. As a gravity, it removes viruses, bacteria, and protozoa for true purification-level protection.
Key advantages include: removes 200+ contaminants including viruses without electricity; 6,000-gallon filter life per pair — extremely low cost per gallon; stainless steel construction lasts decades. At 7 lbs, it's better suited for basecamp or vehicle-based use.
Priced at $280, the Big Berkey Gravity Water Filter scores 8.8/10 in our testing — an excellent performer across our key metrics.
Who Should Buy the Platypus GravityWorks 4L Water Filter System?
The Platypus GravityWorks 4L Water Filter System is designed for camping hiking, gravity fed cabin. As a hollow fiber membrane gravity, it handles bacteria and protozoa — appropriate for most backcountry and domestic use cases.
Key advantages include: hands-free gravity operation — hang it and walk away; 4l dirty + 4l clean bags provide 8l total water storage for groups; 1.75 l/min flow rate is excellent for a gravity system. At 11.7 oz, it's light enough for backpacking.
Priced at $120, the Platypus GravityWorks 4L Water Filter System scores 8.6/10 in our testing — an excellent performer across our key metrics.
How Do the Specs Compare?
Filter type: The Big Berkey Gravity Water Filter is a gravity while the Platypus GravityWorks 4L Water Filter System is a hollow fiber membrane gravity. Different filter types suit different scenarios — consider your primary use case when choosing between them.
Filtration performance: The Big Berkey Gravity Water Filter scores higher on filtration at 9.5/10 versus 8.5/10 for the Platypus GravityWorks 4L Water Filter System. The Big Berkey Gravity Water Filter's virus removal capability is the key differentiator — essential for international travel or emergency scenarios where source water quality is unknown.
Filter life: The Big Berkey Gravity Water Filter lasts longer at 6,000 gallons versus 396 gallons. Factor in replacement cartridge costs when comparing long-term value.
Portability: The Platypus GravityWorks 4L Water Filter System is lighter at 11.7 oz versus 7 lbs for the Big Berkey Gravity Water Filter. For backpacking and wilderness travel, every ounce counts — but for car camping or emergency preparedness, weight is less critical than capacity and ease of use.
Price: The Platypus GravityWorks 4L Water Filter System costs $120 versus $280 for the Big Berkey Gravity Water Filter — a $160 difference. If the pricier unit offers significantly better filtration performance or longer filter life, the upfront cost difference often pays for itself over time.
🏆 Our Verdict
Choose the Big Berkey Gravity Water Filter if you need top-tier filtration performance and premium build quality and features.
Choose the Platypus GravityWorks 4L Water Filter System if you prioritize value (typically $160 less) .
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