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Platypus GravityWorks 4L Water Filter System

Platypus GravityWorks 4L Water Filter System

$119.99

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Platypus GravityWorks 4L Water Filter System is rated 4.5 out of 5 by 24.

Size:4.0L

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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 3 out of 5 by Trinity Santa from Filter element durability issues. I use this system in the back country of California and southern Oregon. The reservoir bags are tough, but the filter element is not. I have had to replace the element nearly every time I've used this system due to element failure.

Date published: 2018-06-12

Rated 4 out of 5 by Kristin from Great filter. 4L in 4 minutes! But...impossible to close. This filter is amazing. 4L in about 4 minutes. It works very well in Montana. We've had it for years and the filter is still going strong. We've saved a lot of hikers who were spent from pumping or their filters just failed completely. So fast and easy - as long as you quickly backflush each time. Unfortunately, there is a deal breaker and here it is: the "zipper" closure on the dirty bag is impossible to get closed. I can't even do it. My husband has to do it and although he is strong, it's very very difficult. And if you can't get it closed, there is no vacuum and the filter won't work. Isn't there a better design or some sort of slide tool that can be offered to help close the bag?

Date published: 2018-06-06

Rated 5 out of 5 by Nature Boy from Easiest Filtration Ever I used this for a week-long camping trip in the Boundary Waters Canoe Area Wilderness last fall. It worked great. There were 3 of us, so we went through a lot of water. We must have filtered at least 40 gallons over the course of the trip. The large 4-liter design made it easy to get enough water to fill our bottles, cook and do dishes. It only took about 10 minutes to filter the entire bag. I've used pump filters before this and will never go back to them. We used a designated "dirty" Nalgene to fill the bag which made that a snap. I'd seen some reviews about the grommets pulling out on the dirty bag, so I stuffed it in a mesh bag that originally held 10# of onions for hanging. Problem solved. I highly recommend this product.

Date published: 2018-04-08

Rated 5 out of 5 by Jose from I would buy this product again and again Best purchase ever, thank you so much!

Date published: 2018-03-06

Rated 5 out of 5 by Earle from Buy it. Clean water clear mind. I set camp at 10800', water was at 10000'. I would filter clean bag, fill dirty bag and hike back to camp. Quick, easy, idiot proof. Invaluable tool. I enjoy all your gear. Well thought out, made well. I look forward to more vertical and more clean water for coffee.

Date published: 2017-12-12

Rated 3 out of 5 by Ted_S from Great concept but design needs tweeking We purchased this for a backpacking trip along the Colorado. It saved less time and hassle over pumping than we'd anticipated. Because the filter can easily get clogged, and the drain port on the dirty water reservoir is at the very bottom, (poor placement), we wanted to avoid getting silt in the dirty water reservoir. So we gathered water in a different container to let the silt settle out. Also it is not practical to directly fill the dirty water container from a shallow source, such as along a sandy beach, and we didn't want to wade into the river up to our waists just to get water. Due to the very stiff zipper, (totally unnecessary and impossible to close if the water or weather is cold), the top of the reservoir is a struggle to keep open in any situation. When filtering the full 4 liters at once, air in the clean water reservoir pressurizes as the reservoir fills, eventually stopping the flow. Detaching the full clean water reservoir results in substantial spillage, as does trying to pour water from the reservoir. It needs to have a handle, such as was on the recently discontinued Platypus PlusBottle, and it also needs to be able to stand upright (at least a little). The current design is about as manageable as a large water balloon. In the future I will probably substitute other, smaller, Platypus bottles that are designed to stand upright.

Date published: 2017-11-11

Rated 4 out of 5 by The Real Carpy from Great Product That Could Be Better I use this filter while camping and while hiking; it can filter enough water for a large basecamp, and it's light and fast enough for a quick hiking group. It doesn't get much simpler than this -- just fill and hang. That said, the bag could be designed better. My biggest wish is that there was some sort of spigot or cap installed in the bag besides where the filtered water runs in. I personally find the process of having to fill the clean bag, flip it, remove the hose and cap the bag cumbersome, but not difficult. If there was a way to collect water from the bag as water was still being filtered in, I believe this system would be many times better.

Date published: 2017-11-02

Rated 5 out of 5 by Peter from No more pumping...! Used the Platy 4.0L Gravity Works Filter up in the High Peaks in the ADK on a three day trip. It was easy to fill from Marcy Brook which was running next to our lean to. It filters water really fast and a quick back flush kept that flow each time we refilled it. Made getting plenty of water painless. Absolutely love the product. Great for backpacking as it's lightweight.

Date published: 2017-10-08

Platypus GravityWorks 4L Water Filter System Reviews - page 2