Effortless, Pump-Free High-Volume Backcountry Filtration

The Platypus GravityWorks Water Filter System is one of the fastest, easiest, and most efficient ways to secure clean drinking water in the backcountry. Engineered primarily for base camps, group backpacking treks, and river expeditions, this system entirely eliminates the fatiguing chore of manual hand-pumping or squeezing. By utilizing a simple two-reservoir configuration, you simply fill the dedicated "Dirty" reservoir with raw wilderness water, hang it from a tree branch or rock outcrop, and let gravitational force handle the hard work of pulling the water through the inline filter into the "Clean" reservoir.

At the heart of the system is an advanced Hollow Fiber Membrane microfilter that utilizes hundreds of tiny hollow tubes to process fluid at an incredible rate of up to 1.75 liters per minute. The 0.2-micron filter medium meets all EPA and NSF guidelines, successfully removing 99.9999% of bacteria and 99.9% of protozoa, including Giardia, Cryptosporidium, E. coli, and Salmonella. The entire system is exceptionally lightweight, highly packable, and features a completely field-cleanable design that can be effortlessly backflushed in just four seconds by reversing the reservoir heights to maintain peak flow rates over its 1,500-liter cartridge lifespan.

Key Features:

• Zero-Pump Gravity Operation: Eliminates manual pumping and squeezing—simply fill the dirty bag, hang it up, and let gravity deliver clean water.
• High-Flow Hollow Fiber Tech: Processes water at an elite rate of up to 1.75 liters per minute, ensuring a group's water needs are met rapidly.
• Rigorous Microfiltration Standards: Tested to exceed EPA and NSF protocols for the absolute removal of 99.9999% of bacteria and 99.9% of protozoa.
• Four-Second Field Backflushing: Can be cleared of silt and debris instantly in the field without tools by simply reversing the flow direction between reservoirs.
• Oversized Wide-Mouth Openings: Features a broad, structured top opening on the dirty reservoir to make scooping water from shallow lakes or slow rivers effortless.
• Hose Shutoff Clamp: Integrated line clamp allows you to regulate or completely pause the delivery of filtered water to save every drop during container changes.
• Compact Packability: Despite its high fluid capacity, the entire component kit rolls down smaller than a standard 1-liter wide-mouth water bottle.