High-capacity, pump-free water filtration for groups and basecamps.
Filtering up to 1.75 liters a minute without any pumping, the high-capacity GravityWorks 4.0L water filter is one of the easiest and fastest ways to get filtered water in the backcountry.
- 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 liters per minute; microfilter lifetime up to 1,500 liters 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.
- Cartridge life: 1500 litres with regular backflushing
**This includes Giardia, Cryptosporidium, E. coli, Salmonella and Cholera.