GravityWorks 4.0L Filter System

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Fast & Compact Gravity-Fed Water Filter

Combining pump-free, gravity-powered water filtration with light and compact storage, the Platypus GravityWorks 4.0L Filter System takes the hassle out of getting clean water. Fill it, hang it, and let gravity do the work for you. Delivering 4 liters of filtered water in just 2.5 minutes with no pumping, the GravityWorks 4.0L system is the easiest and fastest way to get filtered water in the backcountry.

International Restrictions Apply

California WARNING: Can expose you to styrene, which is known to the State of California to cause cancer.


Brand Name:
Micron Rating:
Flow Rate:
Up to 1.75 liters per minute
Treatment Type:
Gravity Filter
Total Weight: 11.5 oz / 326 g
Protects Against:
Protozoa and Bacteria
Filter Material:
Hollow Fibers
Packed Width: 3.25 in / 8 cm
Packed Length: 9.5 in / 24 cm
Field Maintainable:
Made In:
Mfg Sku/Part Number:
Other Features:
• No pumping: Just fill the dirty reservoir, hang it, and let gravity do the hard work.
• Fast: Filters up to 1.75 liters per minute; filter lifetime up to 1,500 liters of water.
• Effective: Meets all EPA & NSF guidelines for the removal of 99.9999% of bacteria and 99.9% of protozoa (Giardia, Cryptosporidium, E. coli, Salmonella and Cholera).
• Ultralight & Compact: System weighs 10.75 oz. (305 g) and stows smaller than most 1L bottles.
• Group-ready: 8 liter (4.0L filtered + 4.0L dirty) total capacity easily supplies water for groups.
• Field-cleanable: Microfilter can be easily backflushed in 4 seconds to maintain filter performance.
• Hollow Fiber Advantage: Hundreds of tiny, hollow fibers enable the microfilter to filter water faster than traditional filter media.
• Easy collecting & dispensing: Collecting water is easy'simply open the top, scoop water, and close; control delivery of filtered water with hose shutoff clamp.
• Adaptable to work with any hydration system
• Allows backflushing/cleaning in the field
• Color-coded Clean and Dirty components
• SlimeGuard™ antimicrobial-treated reservoir
• Includes: 4.0L Dirty reservoir, 4.0L Clean reservoir, Hollow Fiber microfilter, hoses, shutoff clamp, and storage sack.
Made in U.S.A. of U.S. and Imported Materials

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