Sawyer 3.8 Litre Gravity Filtration System

Ideal for that big family summer break, or a group tramping expedition off-grid, the Sawyer Gravity System is a lightweight, robust solution for filtering large volumes of water with ease.

Filter water for a group in as little as 7 minutes, letting gravity do the hard work for you. Using the included Sawyer’s Dual-Threaded MINI Filter, this system removes impurities from up to 378,500 litres (100,000 gallons), making it perfect for group backpacking, backcountry camping, and emergency preparedness.

The MINI filter weighs just 40 g and removes 99.99999% of bacteria, including Salmonella, cholera, and E. coli, and 99.9999% of protozoa, including Giardia and Cryptosporidium. It also filters out 100% of microplastics. With threads on both sides, the push/pull cap attaches easily for on/off functionality during filtering.

The gravity system’s dual-bag design is compact and packable, requiring no pumping. The wide-mouth bladder allows fast filling from lakes, rivers, streams, taps, or even glacial water, and the carry handle makes transport simple. To use, fill the reservoir, hang it from a tree, backpack, or hold it up manually, attach the MINI to the included hose, and let gravity provide fresh, clean drinking water.

• 0.1-micron absolute filtration
• Removes 99.99999% of bacteria, including Salmonella, cholera, and E. coli
• Removes 99.9999% of protozoa, including Giardia and Cryptosporidium
• Filters 100% of microplastics
• Dual-threaded MINI filter with flip-top sports cap for easy on/off use
• Lightweight, compact, and no pumping required
• Individually tested three times to Sawyer performance standards
  
  

  Weight (filter):	40 g
  Weight (kit total):	330 g
  Filter dimensions:	135 x 30 mm
  Kit includes:	Dual-threaded mini filter, 3.8L (1-gallon) bladder, Cleaning plunger, Hose guide, Cleaning coupling and Gravity hose