AutoFlow™ Gravity Filter

AutoFlow™ Gravity Filter

Fast, no-pump water filtration in an ultralight system.
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Updated for 2017: 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 base camps. The 2-liter system is perfect for backpacking pairs.
  • Tested: Meets NSF protocol P231 for removal of bacteria (99.9999%) and protozoa (99.9%) from beginning to end of filter life in “worst-case” water.
  • 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.
  • Assembled in the U.S.A. of U.S. and Imported Materials
  4 LTR 2 LTR
Weight (Standard) 11.1 oz 10 oz
Weight (Metric) 0.32 kg 0.30 kg
Width (Standard) 11.3 in 8.5 in
Width (Metric) 28.7 cm 15.6 cm
Length (Standard) 20 in 15 in
Length (Metric) 50.8 cm 12.7 cm
Height (Standard) 3 in 3 in
Filter media Hollow Fiber Hollow Fiber
Prop 65 Cancer and reproductive harm Cancer and reproductive harm
Country of Origin Made in USA Made in USA

We Believe in What We Build

We know that in the backcountry, reliable gear is critical. That’s why MSR gear has always been engineered to the highest quality standards and rigorously tested before it reaches you.

Seattle Repair Shop

If your MSR gear is in need of repair, please contact our Seattle Repair Shop at 1-800-245-2992 and our technicians will work to find you a solution as quickly as possible. A majority of the time, MSR products can be repaired.

Warranty

If you are experiencing an issue that you feel falls under the MSR Limited Warranty, we’re here to help with that too. Please contact our team to get started.


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