MSR 4 Litre AutoFlow Gravity Filter System

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

$249.95
RRP $274.95
SAVE $25.00
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The supreme ease of the AutoFlow Gravity Filter has converted many backcountry travelers, hikers and outdoors people 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. Available in:

  • 2-liter system is perfect for backpacking pairs.
  • 4-liter system for groups and base camps

Features:

  • 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 Nalgene Wide Mouth (63mm) or reservoir with the included Universal Bottle Adapter.
  • Made in USA

System includes:

  • 1x MSR 0.2 Micron Autoflow Gravity Microfilter
  • 1x MSR Dirty Collection Reservoir (2L or 4L) with built-in femal Quick Connect fitting
  • 1x Male Quick Disconnect Fitting
  • 1x Universal Bottle Adaptor (fits to Nalgene wide mouth)
  • 1x Clean Side Cover
  • 1x Shutoff Clamp
  • 1x Inlet hose (30cm)
  • 1x Outlet hose (122cm)
  • 1x Instructions
  • 1x Filter Test Guide
  • 1x Storage Bag

Specifications:

  • Filtration: 0.2 Micron
  • Filter Media: Hollow Fibre Membrane
  • Lifespan: 1500 Litres+ (Depending on water source)
  • Reservoir: Both 2L & 4L are food safe lined to reduce taste/odors
  • Weight (2 Litre System): 300g (10oz)
  • Width (2 Litre System):  15.6cm (8.5")
  • Length (2 Litre System): 12.7cm (15")
  • Weight (4 Litre System): 320g (11.1oz)
  • Width (4 Litre System):  28.7cm (11.3")
  • Length (4 Litre System): 50.8cm (20")

Download Manual here