Platypus GravityWorks 4L Water Filter System vs ProOne Big+ Gravity Water Filter
Platypus GravityWorks 4L Water Filter System vs ProOne Big+ Gravity Water Filter compared spec-by-spec. Filtration performance, flow rate, pricing, pros, cons, and our verdict on which water filter to buy.
| Specification | A — platypus Platypus GravityWorks 4L Water Filter System 8.6/10 $120 Check Price on Amazon $130
Save $10 | |
|---|---|---|
| Filter Type | hollow fiber membrane gravity | gravity |
| Weight Oz | 11.7 | — |
| Capacity Liters | 4 | — |
| Total Storage Liters | 8 | — |
| Flow Rate | 1.75 L/min | — |
| Filter Life Gallons | 396 | 1,000 |
| Filter Life Liters | 1,500 | — |
| Pore Size | 0.2 micron | — |
| Contaminants Removed | bacteria, protozoa, microplastics | bacteria, protozoa, chlorine, lead, PFAS, microplastics, pesticides, pharmaceuticals, heavy metals, VOCs |
| Requires Power | No | No |
| Virus Removal | No | No |
| Bpa Free | Yes | — |
| Backflush Capable | Yes | — |
| Serves People | 1-6 | 4+ |
| Includes Bags | Yes | — |
| Dirty Bag Liters | 4 | — |
| Clean Bag Liters | 4 | — |
| Operating Temp | above freezing | — |
| Capacity Gallons | — | 3 |
| Flow Rate Gph | — | 2.75 |
| Filter Elements Included | — | 2 |
| Max Filter Elements | — | 3 |
| Filter Element | — | ProOne G3.0 7-inch |
| Material | — | 304 stainless steel |
| Height Inches | — | 22.75 |
| Diameter Inches | — | 9 |
| Weight | — | 10 lbs |
| Iapmo Certified | — | Yes |
Buy the Platypus GravityWorks 4L Water Filter System
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Buy the ProOne Big+ Gravity Water Filter
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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.
Who Should Buy the ProOne Big+ Gravity Water Filter?
The ProOne Big+ Gravity Water Filter is designed for gravity fed cabin, emergency preparedness. As a gravity, it handles bacteria and protozoa — appropriate for most backcountry and domestic use cases.
Key advantages include: iapmo certified to reduce lead, total pfas, microplastics, and chlorine; 3-gallon capacity serves households of 4+ people easily; 304 stainless steel construction is durable and easy to clean. At 10 lbs, it's better suited for basecamp or vehicle-based use.
Priced at $280, the ProOne Big+ Gravity Water Filter scores 8.5/10 in our testing — an excellent performer across our key metrics.
How Do the Specs Compare?
Filter type: The Platypus GravityWorks 4L Water Filter System is a hollow fiber membrane gravity while the ProOne Big+ Gravity Water Filter is a gravity. Different filter types suit different scenarios — consider your primary use case when choosing between them.
Filtration performance: The ProOne Big+ Gravity Water Filter scores higher on filtration at 9/10 versus 8.5/10 for the Platypus GravityWorks 4L Water Filter System. Both provide reliable protection for their intended use cases.
Filter life: The ProOne Big+ Gravity Water Filter lasts longer at 1,000 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 10 lbs for the ProOne Big+ 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 ProOne Big+ 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 Platypus GravityWorks 4L Water Filter System if you need top-tier filtration performance and strong value for the price.
Choose the ProOne Big+ Gravity Water Filter if you prioritize premium features and build quality .
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