The reviews keep coming and for the Platypus Gravity Works 4L Water Filter Purifier and one thing is clear, the GravityWorks™ system is changing how people filter water. Delivering four liters of filtered water is just 2.5 minutes with no pumping, there’s simply no easier or faster way to get safe water away from home. Ideal for bigger groups, the system’s eight-liter capacity eliminates both the worry and hassle of keeping plenty of water around for anything you need.
Effective against protozoa Yes
Effective against bacteria Yes
Effective against particulate Yes
Effective against chemicals/toxins No
Effective against viruses No
Weight 11.5 oz / 326 g
Width 3.25 in / 8 cm
Length 9.5 in / 24 cm
Filter media Hollow Fiber
Filter pore size (microns) 0.2
Flow (L/min) 1.75 liters per min
Cartridge life 1500 liters
Field cleanable Yes
Water Bottle Adapter No
Cartridge replacement indicator No
Country of Origin Made in U.S.A. of U.S. and Imported Materials
• Fast! Filters four liters in 2.5 minutes.
• Weighs just 10.75 oz. (305 g)
• 8L capacity lets you easily transport and store water for groups.
• Backflushes in four seconds, maintaining optimal performance with no additional parts or tools required.
• Platy™ zip opening collects water easily–even in challenging situations.
• Clean storage reservoir with shutoff clamp makes dispensing water a breeze.
• Create a custom system to meet your personal needs using our wide range of accessories.
• Effective: Meets all EPA & NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera.
Platypus modular line of BPA-free and taste-free hydration products includes both handheld and hands-free options like hydration systems, hydration packs, water bottles, water treatment systems, wine preservation, and all the essential accessories for camping, backpacking, travel, work and sports.