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Platypus GravityWorks Water Filter System
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$134.95
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SKU: WX2*0707798
Overview
Built for backcountry water treatment, this gravity-fed system is designed to simplify filtering at camp without the need for pumping. It uses a hollow-fiber microfilter and a wide opening for easy filling from lakes or rivers, then lets you control flow into the clean reservoir with the hose clamp. The field-cleanable design adds practical convenience for extended trips, and the system is available in 2L and 4L configurations to suit smaller groups or larger camps. It is a straightforward option for hunters and outdoor travelers who want a compact water treatment setup that can be hung and left to work.
Why Hunters Choose the Platypus
Gravity-fed Design
Eliminates pumping and lets the
Wide Big
Zip opening makes collecting and
Field-cleanable Microfilter
Can be backflushed in four
Meets Epa
NSF filtration guidelines for bacteria
Compact System
Stows smaller than most 1L
Key Features
- Gravity-fed water filter system requires no pumping.
- Wide Big Zip opening simplifies water collection and dispensing.
- Hollow-fiber microfilter removes bacteria and protozoa, including Giardia and E. coli.
- Field-cleanable design backflushes in 4 seconds to maintain performance.
- Compact system stows smaller than most 1L bottles.
- Available in 2L and 4L models for different group sizes.
Best Used For
- Backcountry hunters needing a no-pump water treatment setup for camp use.
- Small groups wanting to treat water from lakes or rivers with minimal effort.
- Users who prefer a compact system that stows smaller than most 1L bottles.
- Campers needing a field-cleanable filter they can backflush during multi-day trips.
- Larger hunting parties choosing the 4L model to supply shared camp water.
Specifications
| 2l Model Capacity | 2L |
|---|---|
| 2l Model Includes | 2L Platy bottle, 2L dirty reservoir, hollow fiber microfilter, universal bottle adapter, push/pull cap adapter, hoses, and storage sack |
| 2l Model Serves | 2-4 people |
| 4l Model Capacity | 4L |
| 4l Model Includes | 4L clean reservoir, 4L dirty reservoir, hollow fiber microfilter, hoses, shutoff clamp, and storage sack |
| Backflush Time | 4 seconds |
| Big Zip Opening | Yes |
| Compact | Yes |
| Field Cleanable | Yes |
| Filter Type | Hollow-fiber microfilter |
| Filtration Method | Gravity-fed |
| Hose Clamp | Yes |
| Hoses | Included |
| Lightweight | Yes |
| Meets Epa And Nsf Guidelines | Yes |
| Microfilter Lifetime | Up to 1,500 liters |
| No Pumping Required | Yes |
| Pushpull Cap Adapter | Included in 2L model |
| Removes Bacteria | Yes |
| Removes Cholera | Yes |
| Removes Cryptosporidium | Yes |
| Removes E Coli | Yes |
| Removes Giardia | Yes |
| Removes Protozoa | Yes |
| Removes Salmonella | Yes |
| Shutoff Clamp | Yes |
| Storage Sack | Included |
| Universal Bottle Adapter | Included in 2L model |
Pros
- Gravity-fed design eliminates pumping and lets the system do the work.
- Wide Big Zip opening makes collecting and dispensing water straightforward.
- Field-cleanable microfilter can be backflushed in four seconds.
- Meets EPA and NSF filtration guidelines for bacteria and protozoa removal.
- Compact system stows smaller than most 1L bottles.
- Available in 2L and 4L models for different group sizes.
Considerations & Trade-offs
- Gravity-fed operation means you need a place to hang the dirty reservoir for the system to work as intended.
- The system relies on a hollow-fiber microfilter, so it is designed for bacteria and protozoa removal rather than broader contaminant treatment.
- The 2L and 4L versions are set up differently, so the included reservoirs and accessories vary by model.
- Field cleaning is supported, but maintaining flow requires backflushing rather than a simple rinse.
Suggested Comparisons
- Backpacking water filters
- Gravity-fed water treatment systems
- Portable water purification systems
- Group camping water filtration setups
Suggested Accessories
- Water storage reservoir
- Replacement filter cartridge
- Hose clamp
- Storage sack
Frequently Asked Questions
How does the GravityWorks system filter water in the field?
It uses gravity instead of pumping. You fill the dirty water reservoir, hang it up, and water moves through the hollow-fiber microfilter into the clean reservoir.
What contaminants does it say this filter removes?
The product states it meets EPA and NSF guidelines for removing bacteria and protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella, and Cholera.
Is this system field-cleanable?
Yes. The description says it is field cleanable and can be backflushed by raising the clean water reservoir higher than the dirty reservoir to force water and air bubbles back into the dirty reservoir.
How much water can the filter treat before replacement?
The description lists a microfilter lifetime of up to 1,500 liters of water.
What is included with the 2L and 4L versions?
The 2L model includes a 2L Platy bottle, 2L dirty reservoir, hollow fiber microfilter, universal bottle adapter, push/pull cap adapter, hoses, and storage sack. The 4L model includes a 4L clean reservoir, 4L dirty reservoir, hollow fiber microfilter, hoses, shutoff clamp, and storage sack.