Fast, no-pump water filtration in an ultralight system.

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Data sheet

Cartridge life 1 500 l
Flow 1,75 l / min
Filter media Hollow Fiber

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The supreme ease of the AutoFlow Gravity Filter has converted many backcountry travelers to pump-free water filtration. Now, it offers the luxury of effortless water storage and filtration in a more compact, lightweight and streamlined system. Efficient hollow fiber technology filters up to 1.75 liters per minute, and quick and easy tool-free cleanings maintain high flow rates on extended expeditions. Choose the 4-liter system for groups and basecamps. The 2-liter system is perfect for backpacking pairs.

  • Effective Against: Bacteria (99.9999%), protozoa (99.9%) and particulate. Hollow fiber filter meets U.S. EPA drinking water standards* and NSF protocol P231 testing standard.
  • No Pumping: Lets gravity do the work so you don't have to.
  • Fast: Filters more than 1.75 liters per minute.
  • Lightweight: 2-liter system weighs only 300 g (10 oz.). 4-liter system weighs just 315 (11.1 oz.)
  • Field-Maintainable: Can be backflushed repeatedly without disassembly to regain flow rates.
  • Adaptable: Filter directly into most any bottle or reservoir with included Universal Bottle Adapter.

Product combinations

Model Capacity Diameter Weight
09591 2 l 12,7 x 15,6 cm 300 g
09590 4 l 28,7 x 50,8 cm 315 g

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