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Platypus - Gravityworks 4L Filter System

Availability: Out of stock

Stock #: AR-26-42
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The reviews keep coming and one thing is clear: the Platypus GravityWorks system is changing how people filter water. Delivering four liters of filtered water is just 2.5 minutes with no pumping, there’s simply no easier or faster way to get safe water away from home. Ideal for bigger groups, the system’s eight-liter capacity eliminates both the worry and hassle of keeping plenty of water around for anything you need. Some of our GearX staff members can tell you about how the GravityWorks kept them well-hydrated all the way up the Appalachian Trail.


  • Fast! Filters four liters in 2.5 minutes.
  • Weighs just 10.75 oz. (305 g)
  • 8L capacity lets you easily transport and store water for groups.
  • Backflushes in four seconds, maintaining optimal performance with no additional parts or tools required.
  • Proprietary Platy zip opening collects water easily–even in challenging situations.
  • Clean storage reservoir with shutoff clamp makes dispensing water a breeze.
  • Create a custom system to meet your personal needs using our wide range of accessories.
  • Effective: Meets all EPA & NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera.
  • Made in USA of US and imported parts


  • Weight: 10.75 oz / 304.75 g
  • Width: 3 in / 8 cm
  • Length: 9.5 in / 24 cm
  • Filter media: Hollow Fiber
  • Filter pore size: .2 microns
  • Flow (L/min): 1.75 liters per min
  • Cartridge life: 1500 liters
  • Field cleanable: Yes
  • Water Bottle Adapter: No
  • Cartridge replacement indicator: No