Katadyn TRK Drip Filter

Works on gravity pressure, no pumping required. Great for base camps, group/family survival. Simply pour up to 2.5 gallons in top of container which contains the filters. Water slowly drips down into the reservoir tank, open spigot and get water. Up to 13,000 gallons PER filter element (comes with THREE) . Collapses down to a very compact package. Lightweight. Back in the early 1990's no one knew the name "berkfield". It was only after Katadyn got backed up due to Y2K sales that Berkfield got a foot hold in America. Plastic unit is easier to clean than a metal berkfield and won't hold SMELLS. The original as used by the Red Cross, special operations units, etc. choose KATADYN! $15. shipping