Gravityworks 4 L Filter System

If the GravityWorks 4.0L Filter System were any easier, it’d have a trail of amorous followers that would never leave it alone. As it is, there are plenty of devotees (purely platonic, of course) who can’t get enough of the world’s simplest water filtration system. Just fill one of the Platy Zip bags with water, place it above the empty bag, open the hose clamp, and let gravity do the rest. In 2.5 minutes, you’ll have four liters of clean water, and if camp is far away, fill the other bag to carry back with you and clean when you need it. Open the hose clamp to dispense water, and shut it to stop the flow. To clean, simply reverse the bags for four seconds, running water through the filter in reverse. That’s seriously it.

Features

• High capacity gravity fed system enables pump free water filtration for groups and basecamps
• Fill and hang operation allows passive gravity flow without manual pumping effort
• Flow rate delivers up to 1.75 liters per minute for fast group water processing
• Microfilter lifespan rated up to 1500 liters for extended field use
• Meets EPA and NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa
• Hollow fiber filtration media uses hundreds of microchannels for efficient water flow and treatment
• 0.2 micron pore size provides mechanical filtration of bacteria and protozoa while allowing high flow
• Group ready design supports total system capacity of 8 or 12 liters for shared hydration needs
• Field cleanable microfilter can be backflushed in approximately 4 seconds to restore performance
• Easy fill reservoir design allows simple scooping and sealing for water collection in natural sources
• Hose shutoff clamp enables controlled dispensing of filtered water to multiple users or containers
• No chemical or virus removal indicates reliance on mechanical filtration only
• Lightweight compact system stows small for efficient packing in group or expedition kits

Tech Specs

• Activity

  Hiking, All-Mountain

• Cartridge Life

  1500 Liter

• Dimensions

  3.5" x 9.5"

• Effective Against

  Bacteria, Particulate, Protozoa

• Field Cleanable

  Yes

• Filter Type

  Gravity

• Flow Rate

  1.75 Liters Per Minute

• Manufacturer Warranty

  3 Year

• Material

  Polyethylene

• Weight

  11.5 oz