Best Gravity Feed Water Filter

The Platypus GravityWorks 4.0 Liter High-Capacity Water Filtration System is ideal for basecamps, group and family camping, outdoor activities, and emergency preparedness. It does not require pumps, batteries, moving parts, or chemicals, ensuring access to clean water from contaminated sources, in situations ranging from adventure to survival. The replaceable hollow-fiber microfilter cartridge filters up to 1,500 gallons of water, and meets all EPA and NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella, and Cholera. The water filtration system is easy to use almost anywhere. Simply scoop water from a lake, river, stream, or other contaminated water source into the 4.0-liter dirty water reservoir, and suspend above the 4.0-liter clean water reservoir. Water flows through the walls of the bundled fibers at rate of 1.75 liters/minute, leaving impurities behind, and filling the 4.0-liter clean water reservoir in just 2.5 minutes. It’s also easy to maintain in the field, backflushing in just four seconds to clean and restore performance. The Platypus GravityWorks 4.0 Liter High-Capacity Water Filtration System includes a 4-liter dirty water reservoir, 4-liter clean water reservoir, hollow-fiber microfilter, hoses, shutoff clamp, and storage sack. The complete kit is compact, packing down to the size of a one-liter water bottle, and weighs just 11.5 ounces. Made in the USA.

Life Straw flex with Gravity bag is a powerful 2-stage water Filter that provides safe drinking water in any environment. It removes Bacteria, parasites, and micro plastics while reducing lead and chemicals. It can be used in 4 ways: with the included 1-gallon Gravity bag, as a personal straw, attached to a hydration pack, or with a plastic water bottle. It exceeds us EPA and NSF standards for safe drinking water. The hollow fiber membrane is good for 2, 000 liters (500 Gal), while the replaceable carbon Filter lasts 100 liters (25 Gal).

A lightweight, robust solution for filtering large quantities of water, Sawyer’s Gravity System with dual-threaded MINI filter is ideal for backpacking, backcountry camping, and emergency preparedness. Available in two models, the 1-Gallon Gravity System (SP160) comes with one bag and a MINI, while the 1-Gallon Dual Bladder Gravity System (SP2160) comes with two bags (one for dirty water, one for clean) and a MINI.

The Sawyer dual-threaded MINI water filter weighs just 2 ounces, fits in the palm of your hand, and is rated to 0.1 micron absolute filtration — removing 99.99999% of all bacteria, such as salmonella, cholera, and E.coli, and removing 99.9999% of all protozoa (such as giardia and cryptosporidium). The MINI also filters out 100% of microplastics. With threads on both sides, you can screw the push pull cap onto the MINI for easy on/off functionality while filtering.

Convenient and easily packable, this single- and dual-bag gravity system doesn’t require any pumping and is perfect for camping, hunting, fishing, scouting, disaster relief, and emergency preparedness kits, as well as on adventure travel excursions where potable tap and bottled water are not easily carried or safe to drink.

The 1-gallon bladders feature a wide mouth cap that allows for fast and easy filling, as well as a convenient carry handle.

SP160 Single Bladder Gravity System
To set up the SP160 gravity-based filter system, first fill the reservoir with water from any source (a lake, stream, pond, glacier, kitchen faucet, etc.). Hang the bag — from a tree, the back of your pack, or hold it up with your hand — and connect the MINI to the included hose and let gravity do its work. Water will flow through the MINI to produce fresh, clean water for drinking and cooking (separate container required for clean water capture).

The SP160 package includes a dual-threaded MINI water filter, 1-gallon bladder, cleaning plunger, and gravity hose with adapters. It also comes with Sawyer’s Cleaning Coupling accessory, which enables you to effectively backwash and clean the MINI filter using a standard plastic water or soda bottle.

SP2160 Dual Bladder Gravity System
Similar in operation to the SP160, the SP2160 system includes a second “Clean Water” 1-gallon reservoir to hold your filtered water. Fill the dirty water bladder with water from any source, then connect the MINI and tubing between the dirty bag and clean bag. Hang the dirty bladder to allow gravity to help water to flow through the MINI to the second clean bladder below.

The SP2160 package includes a dual-threaded MINI water filter, dirty water bladder, clean water bladder, tube adapter with shutoff clamp, inline adapters, tube adapter, long tube, hanging strap with S-biner, cleaning plunger, cleaning coupling, push-pull cap, and hose guide.

MINI Filter, Full Size Performance

The MINI water filter houses a cluster of micro-fibrous tubes that use similar technology found in medical dialysis. As water passes through the side walls of the tubes, harmful bacteria and protozoa are trapped on the outer walls, so you can be confident your water is safe to drink.

Rated to filter up to 100,000 gallons, the MINI’s filtering membranes are sturdy enough to withstand backwashing using the included syringe, restoring up to 98.5% of the filter’s flow rate. Sawyer individually tests each and every MINI three times to performance standards before packaging.

About Sawyer
Since 1984, Sawyer Products has offered the best, most technologically advanced solutions for protection against sun, bugs, water, and injuries — everything from first aid kits developed for wilderness to point-of-use water filters that filter contaminated water to levels cleaner than U.S. bottled water.

The Katadyn Gravity Camp 6 L Water Filter allows you to always have clean drinking water and you won’t have to pump a stroke. At the heart of the Gravity Camp 6 L is the newly developed Ultra FlowTM Filter Element with a flow rate of up to 2 liters per minute. You can reliably filter bacteria, cysts and sediment and a cleanable filter protector lengthens the lifetime of the element so it can clean up to 1,500 liters of water. Thanks to the water level indicator window you can easily see when you need to make another trip to your water source. When you need to refill water, you can easily remove the tube with a quick-release valve equipped with auto shut off. That keeps the hose from coming in contact with contaminated water during refilling. It comes with a practical carry strap to make fetching water from a river or spring easier. Whether brushing your teeth, washing up, or quenching your thirst, plenty of fresh water will always be available. And with the shower adaptor (available separately), nothing will even stand in the way of a refreshing shower outdoors. This high performance water filter is suited for 1 to 10 people and Ideal for families, camps, expeditions, tour operators, scouts or military.High capacity performance- filters up to 6 liters in 5 minutes > suited for larger groups.Faster flow and reliability- even in turbid conditions.A cleanable filter protector lengthens the lifetime of the filter element so it can clean up to 1,500 liters of water.The water level indicator window it is clearly visible when another trip to the water source is necessary.The outlet hose can be removed with a quick-release valve equipped with auto shut off that keeps the hose from coming in contact with contaminated water during refilling.Compact filter, foldable water bag > minimum weight and space requirement.Simple closure system allows bag to be easily hung on any branch and carried.Hydration bladder quick connects.Quick-release valve and auto shut off.The practical…

Replacement filter cartridge filters to 0.2 micron. Meets EPA Guide Standard for removal of bacteria and protoza. Dimentions: 4.5×14.7cm/1.8×5.8in

√Highest, 25L large storage capacity to meet the water needs of many people outdoors. Perfect for group camping, travel and adventures. √Versatile creatively designed for drowning rescue after folding 3 layers (comply with international rescue equipment rules) and can also be used as a waterproof backpack to store items. √Humanization design： portable backpack design, easy and convenient to intake water. Backpack shoulder strap with reflective strip is safe for the outdoor activities in the dark. √Easy to clean: The design of external filter is perfect for cleaning, which can ensure that the filter parts will not be blocked- -first choice for emergency Relief after earthquakes, floods and other sudden disasters.

Conclusion

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