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Platypus GravityWorks High-Capacity Water Filter System for Group Camping and Emergency Preparedness

4.8 out of 5 stars 1,115 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Camping & Hiking Water Filters by Platypus

List Price: $119.95 Details
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Available at a lower price from other sellers that may not offer free Prime shipping.
4.0 Liter
Brand Platypus
Capacity 4 Liters
Product Dimensions 13.2 x 2.8 x 5.8 inches; 11.64 Ounces
Included Components Clean reservoir, Dirty reservoir, microfilter, hoses, storage sack

About this item

    This fits your .
  • Make sure this fits by entering your model number.
  • High-capacity, gravity-fed, hollow-fiber water filter system is ideal for group and family camping, outdoor adventures, and emergency preparedness
  • Meets all EPA/NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa, including giardia, cryptosporidium, E. coli, salmonella, cholera
  • No pumping required; reservoir fills easily and hangs from a tree to deliver four liters of filtered water for cooking and washing in 2.5 minutes
  • Includes 4-liter dirty water reservoir, 4-liter clean water reservoir, hollow-fiber microfilter, hoses, shutoff clamp, and storage sack
  • Replaceable cartridge filters up to 1,500 gallons; produces flow rate of 1.75 liters/minute; kit weights 11.5 ounces; made in the USA

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  • Platypus GravityWorks High-Capacity Water Filter System for Group Camping and Emergency Preparedness
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From the manufacturer

gravity, works, system, microfilter, water, filter gravity, works, system, microfilter, water, filter gravity, works, system, microfilter, water, filter meta, bottle, microfilter, water, filter, platypus
Gravity Works 4L System Gravity Works 2L Bottle Kit Gravity Works 2L System Platypus Meta Bottle + Microfilter
Which model is right for you? High-capacity system for filtering and dispensing water for groups Light, compact system that filters directly into any bottle or hydration reservoir. All the versatility of the Bottle Kit with the addition of a 2L Platy Bottle. Personal water filtration that's backcountry ready
Flow (L/min): 1.75 liters per minute 1.75 liters per minute 1.75 liters per minute up to 2L a minute
Cartridge Media / Life: Hollow Fiber / 1500 liters Hollow Fiber / 1500 liters Hollow Fiber / 1500 liters Hollow Fiber / 1500 liters
Field cleanable? Yes - backflush for 4 seconds Yes - backflush for 4 seconds Yes - backflush for 4 seconds Yes - simply shake to clean
Weight: 11.5 oz / 326 g 9.5 oz / 270 g 11.5 oz / 325 g 8.5 oz / 240 g
Width: 3.25 in / 8 cm 3 in / 8 cm 3 in / 8 cm 3.5 in / 9 cm
Length: 9.5 in / 24 cm 9 in / 23 cm 9 in / 23 cm 9.5 in / 24 cm

Product details

Style:4.0 Liter
  • Date First Available ‏ : ‎ July 2, 2020
  • ASIN ‏ : ‎ B08C8G9VTC
  • Customer Reviews:
    4.8 out of 5 stars 1,115 ratings

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
1,115 global ratings
How are ratings calculated?

Top reviews from the United States

Reviewed in the United States on September 21, 2015
Style: 4.0 LiterVerified Purchase
Customer image
5.0 out of 5 stars BEST Water filter! Period.
By Mike on September 21, 2015
Incredibly handy! Before buying this I did an exhaustive amount of research on water filters. What sold me on this is the fact that you can get a lot of water in one shot, it filters FAST, and most importantly... NO PUMPING! If you're backpacking this is a no brainer. Water weighs 8.3lb per gallon and an adult needs about a gallon a day, so bringing water on a multi-day trip is not an option. This weighs less than a pound at 13.6oz! This can also save you money in the long run. The filter lasts for 1500 liters or 396 Gallons, If you're buying gallons of water from the store that'll cost you $350-$400. Even if you're filling from the tap this will save space and save you from having to lug water around.

The other "straw" filters are handy, but if you need to fill a Camelbak bladder or use water for cooking, then you'll need a filter that is capable of filtering more water. The tubing and the storage bags are high quality and will not kink or deform. The hoses are long so you can hang the dirty bag from a branch and put the clean bag on the ground for maximum filtering speed, or you can just hang the clean bag from a lower branch. To dispense you can just detach the hose on the clean side of the filter and hang the clean bag as show in the picture.

Want to get the most out of one trip to the water source? You can actually get 8 liters in one shot! Just fill the dirty bag and wait a short 3 minutes for it to filter. Then detach the clean water bag from the hose and screw on the provided screw cap to close the clean bag. Then will up the dirty bag and boom you've got 4 liters ready to go and another 4 that can be quickly filtered! That's 2.1 Gallons in one trip!

Cleaning:
Every 8 liters or so (depending on water quality) when the dirty bag is nearly finished filtering, simply lift the clean bag higher and back-flush it for about 5 seconds and then clamp the hose and discard the water in the dirty bag. For long term cleaning add 2 liters of clean water to the dirty bag, add a couple drops of bleach, and filter it through. You can towel dry the dirty bag, but the clean bag you'll need to just hang it for a few days in a dry place. The filter can be dried out by removing the bumpers and the plastic end pieces, and leaving it sit for a week.

Cons:
The filter is advanced but delicate, it cannot be dropped or used if the temperature may drop below 32F (0C) as it will damage the filter. You can easily test the integrity of the filter though by trying to blow air backwards through it. If there are bubbles on the other side, then the filter is broken, if not then you are good.

I simply love this filter and couldn't be happier with my purchase. I hope you found this review helpful!
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223 people found this helpful
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Reviewed in the United States on October 14, 2019
Style: 4.0 LiterVerified Purchase
23 people found this helpful
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Reviewed in the United States on July 16, 2018
Style: 4.0 LiterVerified Purchase
34 people found this helpful
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Reviewed in the United States on June 15, 2016
Style: 4.0 LiterVerified Purchase
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3.0 out of 5 stars Plastic is not strong enough to hold filter hanged!!!
By patsig on June 15, 2016
in order to filter the water you are suppose to rang the dirty bag. problem is that after 2 days using my new filter, the plastic holes that holds the straps are almost falling apart... too bad, I was really enjoying that filter a lot. would be really easy to have a stronger way to hold it up.

update: just called support that were very nice and will send me a replacement bag, since it should have been a manufacturing problem...
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68 people found this helpful
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Top reviews from other countries

J C
3.0 out of 5 stars Excellent gravity filter that just works
Reviewed in the United Kingdom on December 31, 2017
Style: 4.0 LiterVerified Purchase
4 people found this helpful
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Amazon Customer
5.0 out of 5 stars Excellent value for money - a 'must have' item for any adventurer. Light, reliable & easy to use.
Reviewed in the United Kingdom on May 8, 2019
Style: 4.0 LiterVerified Purchase
Amazon Customer
5.0 out of 5 stars Wouldn’t hike without it
Reviewed in the United Kingdom on January 29, 2021
Style: 4.0 LiterVerified Purchase
Anthony hardy
1.0 out of 5 stars Not a good product and avoid buying
Reviewed in the United Kingdom on February 2, 2020
Style: 4.0 LiterVerified Purchase
nygel smith
5.0 out of 5 stars Excellent product.
Reviewed in Canada on August 11, 2019
Style: 4.0 LiterVerified Purchase
6 people found this helpful
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