Platypus GravityWorks 4L Water Filter System

$119.99

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Platypus GravityWorks 4L Water Filter System is rated 4.7 out of 5 by 7.

Size:4.0L

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CA WARNING.

WARNING: Can expose you to styrene, which is known to the State of California to cause cancer. https://www.P65Warnings.ca.gov/product

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Enjoy quick and easy filtered water when you need it with the Platypus® GravityWorks™ 4L Water Filter System. Designed to provide up to 4 liters of filtered water in just 2-1/2 minutes without any cumbersome pumping, this lightweight system utilizes gravity to deliver safe water for several people. This lightweight 10.75 oz. system includes a capable filter that meets all EPA and NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera. Dual bag system also doubles as a handy water transport solution, carrying up to 8 liters. Made of Platypus' taste- and BPA-free food grade liners, the GravityWorks' 2 bags feature Platy™ zip opening for easy filling/emptying. The system's hollow fiber filter traps particles down to 0.2 microns and backflushes in just 4 seconds for easy maintenance. 9.5"x3.25" bags. Filters up to 1500 liters per filter.
Manufacturer model #: 3135.

Easy-to-use, pump-free water filtering system
4 liters of filtered water in just 2-1/2 minutes
Lightweight 10.75 oz.
2 taste- and BPA-free food grade liners
Hollow fiber filter - traps particles down to 0.2 microns
Meets all EPA and NSF guidelines for the removal of Bacteria and Protozoa
Doubles as a water transport solution - holds up to 8 liters

Web ID: 1411180532114

Rated 5 out of 5 by Coyote21 from Great product I bought this for use in the Boundary Waters. There were six of us on this trip and we used it heavily for a week as the weather was warmer than usual. It performed wonderfully, with no clogs. It fills the clean water bag very quickly. In contrast to a another company product we used the year before, the Platypus is superior. The other product was slow and the filter clogged the second day.

Date published: 2017-06-13

Rated 5 out of 5 by Heston83 from 230 Miles on the John Muir Trail Myself and a hiking partner carried the 4L Gravityworks setup for 230 miles during the summer JMT season. It performed flawlessly, and provided ample water for everything we needed. It was awesome. 5 stars for multiple hikers. For a single hiker - go with a smaller 2L setup or a Sawyer Squeeze screwed to SmartWater bottles and save some weight. Yes, you'll pay a weight penalty because it's heavier than a Sawyer, but the amount of time and effort saved is well worth it at the end of a long day. Advice: be sure to not get water that has too much of an odor or it will stink up the clean water for days until its all flushed out. We got a bag of water that had some eggs in it, water was clean after filtering, but the smell and taste remained for about 2 days. Ill be carrying this setup for every hike from now on.

Date published: 2017-01-30

Rated 3 out of 5 by Zeezrom from Worked Great - Some Design Changes are Needed I purchased the Platypus GravityWorks 4.0L water filtration system for a recent backpacking trip I took to the High Uinta mountains in Utah. I typically backpack into a wilderness area once a year. Historically I have used a hand pump to filter all my water, but they are always so slow especially when there are several people sharing the filter. This year I decided to go for a gravity filtration system. I'm glad I did. Is the product perfect? Far from it. There are some pretty significant changes that I believe are required to make this the best gravity system on the market. The Pros: + The whole package was very lightweight and compact which is essential for backpacking. + The ability to fill the dirty water bag by opening the entire top of the bag is very helpful. Other units on the market require getting the water into a smaller hole which can be tricky in certain water situations. + The filtration rate is grate. It didn't take much more than 5 minutes to filter an entire 4 liter bag. The Cons: - Pricey. This thing costs too much for the materials involved. Would I pay for the convenience of not having to pump all my water? Yes. That's exactly what I did. However, Platypus should drop the price on this thing given what it must cost them to manufacture it. Other than the filter it's just a couple of lengths of plastic hose an two plastic bags. - The seal on the top of the dirty bag is a ZipLoc type seal that is pressed together. Most of the time I had difficulty getting it to seal all the way especially when trying to do it with wet hands. Let's face it, your hands will be wet most of the time when trying to fill this up. - The plastic grommets that the webbing straps used to hang the bags from a tree are weak, and the contact points are week. My dirty bag has only been used for a four day trip, and I don't know that it would make it through another four days without the web strap pulling completely through the holes used to hang the bag. See pictures. - Drying the unit out is a pain. The dirty bag dries easily because the entire top of the bag can be opened up. The clean bag is another story. It merely has a small opening at the bottom of the bag less that the size of a quarter. Trying to get the water in it to dry up has been a chore indeed. I don't want to pack the unit up with it still having moisture in it. I washed the unit out last Saturday, and it's currently Thursday. I was using a hair dryer this evening to try to get it dry inside. The bag needs to be designed to open up at the top to allow it to either be turned inside out or to just otherwise dry. My Geigerrig Hydration Engine that I use for carrying water in my pack uses a great design to follow. The way the bag seals at the top would be ideal for the Platypus dirty bag, and the way it opens up and can be pulled inside out would be great for drying both bags. Overall I would buy this product again just because of the amount of time it saved me from pumping water during my four day backpacking trip. I don't think the bags are going to last more than another trip at this point. I hope to contact Platypus to make some suggestions. If they can make some modifications to the design I'm sure this can situate itself as the best gravity filtration system on the market.

Date published: 2016-08-12

Rated 5 out of 5 by cohunter71 from Great product! These units are awesome and came in handy while elk hunting the backcountry of Colorado! Once we got to camp, we filled up the one bladder labeled dirty water and set up was so simple and by the time we got back to camp which was hours later we had clean water for the next day. Perfect setup for that backcountry adventure! Since the first purchase, I have bought an additional unit to double our water supply at camp. Very lightweight too which is huge when packing for a 4-5 day backcountry hunt.

Date published: 2016-02-21

Rated 5 out of 5 by NorthernUtahn from Best Filter I've Used This certainly deserves 5 stars. I've used a number of other filters and I'll never go back. It's so easy to use and when you're dying of thirst you don't have to squat down and pump water for minutes on end. My only two suggestions to anyone who is going to get the Platypus, 1) get the 4L not the 2L (it doesn't weigh any more and you can carry 8L of water if you have to) and 2) bring a handkerchief with you if you're going to be in a real sandy place to pre-filter the water. You don't have to but it helps keep the sand out of the filter so you won't need to back-flush as often.

Date published: 2015-10-14

Rated 5 out of 5 by tsjbryant from Simple and Effective I used this water purifier on a 4 day moose hunt. The filter is simple to set up and take down. It holds a relatively large amount of water and is easy to store for use. It is light weight and compact. Finally, with beavers swimming around in front of us in the lake we were using, giardiasis or "beaver fever" was a real threat, but the fileter did the job. All four of us used the water filter for all our needs, with no ill effects. Great product.

Date published: 2015-10-06

Rated 5 out of 5 by BigBobChief from GravityWorks Water Filter Excellent product. I was up in the Colorado mountains last week and was able to easily filter water quickly every morning. So much water everyone else was able to use it as well. [This review was collected as part of a promotion.]

Date published: 2014-09-30

Platypus GravityWorks 4L Water Filter System

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