Filtering up to 1.75 litres a minute without any pumping, the high-capacity GravityWorks Water Filter System filter is one of the easiest and fastest ways to get filtered water in the backcountry. With two different sizes—4.0L & 6.0L—the GravityWorks is ideal for bigger backpacking groups or basecamps. Offering an 8 or 12-litre total capacity, either model easily supplies filtered water for drinking, washing up, cooking, and cleaning. Simplify your water collection with the GravityWorks system and spend more time enjoying your group.

• No pumping: Just fill the dirty reservoir, hang it, and let gravity do the hard work—yep, filtering water can be as easy as fill, hang, relax.
• Fast: Filters up to 1.75 litres per minute; microfilter lifetime up to 1,500 litres of water.
• Effective: Every microfilter is individually tested to ensure it meets all EPA & NSF guidelines for the removal of 99.9999% of bacteria and 99.9% of protozoa*.
  Light & Compact: System weighs 11.5 oz. (326 g) and stows smaller than most 1L bottles.
• Group-ready: 8 litre (4.0L filtered + 4.0L unfiltered) total capacity easily supplies water for groups.
• Field-cleanable: Microfilter can be easily backflushed in 4 seconds to maintain filter performance.
• Hollow Fiber Advantage: Hundreds of tiny, hollow fibres enable the microfilter to filter water faster than traditional filter media.
• Easy collecting & dispensing: Collecting water is easy—simply open the top, scoop water, and close; control delivery of filtered water with hose shutoff clamp.
• Comes with: Clean reservoir (4.0L), Dirty reservoir (4.0L), Hollow Fiber microfilter, hoses, shutoff clamp, and storage sack.*This includes Giardia, Cryptosporidium, E. coli, Salmonella and Cholera.

Specs:

Model: 03135
Width (Standard): 3.25 in
Width (Metric): 8 cm
Weight (Standard): 11.5 oz
Weight (Metric): 0.33 kg
Length (Standard): 9.5 in
Length (Metric): 24 cm
Effective against bacteria: Yes
Effective against chemicals/toxins: No
Effective against particulate: Yes
Effective against protozoa: Yes
Effective against viruses: No
Filter media: Hallow Fiber
Filter pore size (microns): 0.2
Flow (L/min): 1.75 litres per min
Cartridge life: 1500 litres
Field cleanable: Yes
Water Bottle Adapter: No
Cartridge replacement indicator: No
Material(s): Polyethylene
Country of Origin: Assembled in the U.S.A. of U.S. and Imported Materials