Platypus Gravityworks 4.0L Water Filtration System

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  • Regular price $119.99


The minimalist, ultralight and ultracompact GravityWorks 4.0L Bottle Kit uses a simple and easy design to connect the pump-free water filter directly to a water bottle or hydration reservoir.
This pump-free system is gravity fed and offers a high-flow capacity. Fill the unfiltered water reservoir, raise, and hang it. You'll have 4.0L of clean water in under 3 minutes.

The fibres in this filter are slightly more brittle than other types. Although the cartridge is encased in a protective rubber shell, and drop-tested to seven feet, consider carrying a spare cartridge on long trips – they are small, light, and relatively inexpensive.

  • Filters 4L of water in less than 3 minutes (depends on water quality).
  • Hollow fibre filter has a high surface-area that allows water to flow quickly through a 0.2 micron effective pore size.
  • Do not allow the cartridge to freeze after initial use.
  • Nominal 1500L filter life is for clear water, turbidity will reduce the useful life of any filter.
  • Maintain a high flow rate in the field by holding the clean water reservoir above the unfiltered reservoir. No disassembly required.
  • Unfiltered reservoir has a webbing handle for carrying and hanging. Quick-disconnect valve automatically cuts the flow of water when the hose is disconnected. Hose connection on the side won't collect silt and debris.
  • Clean reservoir has a webbing loop and a simple hose connection, and no top zipper, so it won't pop open while in use.
  • Reservoirs are made of silver ion-treated polyethylene film that doesn't pick up tastes.
  • Clip-style shut-off valve on output hose between reservoirs.
  • Silicone tubing.