Platypus GravityWorks 4.0L Filter System

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  • Platypus GravityWorks 4.0L Filter System
  • GravityWorks™ 4.0L Water Filter
  • Platypus Gravityworks Water Filter Review
  • Platypus GravityWorks 4.0L water filter system
  • Platypus GravityWorks Water Filter
  • Platy™ How To: Get the most from your GravityWorks™ 4.0L Water Filter
  • Platy™ How To: Care and Maintenance of your Platypus™ GravityWorks™ Water Filter
  • Platypus GravityWorks 4L Water Filter
  • Platypus GravityWorks 4 Liter Group Water Filtration System
  • Platypus Gravity Works 2.0L Water Filter System
Amazon Price: N/A (as of September 24, 2017 1:48 pm – Details). Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on the Amazon site at the time of purchase will apply to the purchase of this product.

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FEATURES of the Platypus GravityWorks 4.0L Filter System Filters four liters in 2.5 minutes Weighs in at just 10.75 oz (305 g) 8 liter capacity allows you to easily transport and store water for large groups Backflushes in four seconds, maintaining optimal performance with no additional parts or tools required Proprietary Platy zip opening collects water easily, even in a pinch or crappy conditions Clean storage reservoir with shutoff clamp allows for easy dispensing Meets all EPA and NSF guidelines for the removal of Bacteria and Protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera Clip webbing strap for easy handling, lifting, and carrying Bold and color-specific "DIRTY" and "CLEAN" graphics for quick identification Corner mounted valve for better packing Field cleanable design Made in USA of US and imported parts

Product Details

  • Shipping Information: View shipping rates and policies
  • ASIN: B00J4022FS

Customer Reviews

Best Water Filter on the Market (Not Perfect – Just the Best)

22 people found this helpful.
 on September 27, 2014
By Kerry C Keen
Must have rushing water to fill up reservoir or use a rigid container to scoop out water and pour that into the reservoir. Back-flush the filter with clean tap water regularly to maintain fast flow through the filter. The water source needs to be several inches deep.

We love bringing this along

 on September 4, 2017
By Mboel
This has been a lifesafer on hike in camping trips. We love bringing this along. Easy to use and filters water so quickly. Make sure to clean it out after every use and to backflush so that it filters water fast. If it gets clogged then obviously it’s going to filter slower. Just make sure to set up your water filter far away from the campfire otherwise the plastic and then the water will start to smell like smoke!

I have enjoyed using the product

 on August 4, 2015
By Nathan
I have enjoyed using the product. The capacity is good for groups when compared to the 2 liter version, which required frequent filling to make it through a single meal for about 9 scouts and adults on a backpacking trip. Other than the frequent filling for the group, it was easy to use. If you refill the dirty water bag after filling the clean bag, it gives you 8 liters of water to bring back to camp. Just filter the dirty water when you use up the clean bag.

I was using (I should say fighting with) an MSR …

One person found this helpful.
 on January 31, 2016
By Ben and Amanda
I was using (I should say fighting with) an MSR Hyperlite filter before getting this. It’s a few ounces heaver than the MSR, but a billion times easier to use. I no longer have to fight with leaks all over my hands while back flushing, just lower the inlet bag, and raise the outflow bag. Simple. Filters fast, and you can even rig the clean bag up as a hydration filter and leave the water bottle at home!

Great system, great idea.

 on July 29, 2015
By Flowerpotts
Talk about filter envy! We recently went on a 6 day canoe trip, By the fourth day ALL of the guys were using our filter instead of pumping with their own filters. (I guess it’s the guy’s job to filter water each morning and evening?) This was SOOO easy to set up and use. It is pictured hanging on a tree or high stand. I was able to place it on our upturned canoe and it worked fine with about 2 feet of drop. And it is QUICK! Much faster and easier than sitting there pumping by hand. I just set it up and walked away, did other things, came back, refilled it and started on another water bottle. Well worth the expense even if you already have a good pump system. Nice to find something that is logical (gravity) and works easily. Glad we invested in it.

This is a lifesaver over the hand pump style filters …

 on August 13, 2015
By ResearchBeforeBuying
This is a lifesaver over the hand pump style filters. After a long day of hiking, the last thing you want to do after setting up camp is sit near the river, pumping with one hand, holding your canteen in the other, while pulling off a balancing act trying not to fall in.

I was having a hard time justifying the price and …

One person found this helpful.
 on May 20, 2017
By Andrew Noonan
I was having a hard time justifying the price and added weight/size over my Sawyer Squeeze, but I figured I would try it. After one trip, I will never backpack without it. It takes all of the hassle out of filtering. The added weight isnt significant and is totally worth it to save time and effort. I can have my whole groups water for the day filtered in 10 or 15 minutes while I pack up. Just get one.

Four Stars

One person found this helpful.
 on March 13, 2016
By Hal Docherty
Cant wait to test out product. Sadly was missing a part and had to contact Cascade Designs.

BEST Water filter! Period.

30 people found this helpful.
 on September 21, 2015
By Mike
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.
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