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Description

Pour dirty water in one end and drink clean water out of the other.

Your hand-pump water filter looks slow and inefficient in comparison with the Platypus GravityWorks 2.0L Filter System. This gravity-powered water filtration system is ultralight, easy to pack, and fast. Just collect dirty water in one reservoir, hang the system, and in just a few minutes the second reservoir will be filled with two liters of clean, drinkable water.  And there was much rejoicing among backpackers.

  • System uses gravity to assist the movement of water through the filtration system, saving you precious energy in comparison to pump systems
  • Inline system passes water from the dirty reservoir to the GravityWorks filter and then down the line to the clean reservoir
  • GravityWorks filter attaches to the dirty reservoir via a quick-release fitting that automatically shuts off the flow of water when you disconnect the hose to disassemble the system
  • Two-liter 'dirty' reservoir has a large, push-seal opening for easy collection from a variety of water sources
  • Two-liter 'clean' Platy Bottle serves as the clean-water collection point in the in-line filtration system
  • Both dirty and clean reservoirs feature a SlimeGuard antimicrobial treatment to control funk, and both are made of BPA-free plastic which makes them safe, easy to pack, and highly durable
  • Two liter capacity is ideal for a solo backpacker with two on-liter water bottles or two backpackers who drink at a slower rate
  • System is compatible with reservoir-based hydration system or standard, water-bottle-based hydration
  • System includes one two-liter collection reservoir, one Platy Bottle with push-and-pull cap, quick-release fittings, one Gravity-Works filter cartridge, one in-line adapter, and hoses

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Review Summary
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2 4
2 3
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Platypus GravityWorks 2.0L Filter System - Reservoir Kit

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Here's what others have to say...

2 5

Go with GravityWorks 4.0L system instead

  • Gender: Male
  • Familiarity: I've put it through the wringer

First off, I think Platypus GravityWorks Filter Systems are the bomb! I give this 2.0L Filter System a 2 star, or "not recommended", rating only because I think the GravityWorks 4.0L Filter System is the best backcountry filtration system out there (see my separate review of that excellent product)!

Reason: For virtually the same weight, cost and space in your pack, you get the flexibility to manage up to 8L (with the 4.0L system) vs. only up to 4L (with the 2.0L system) - again, see my review of the 4.0L system.

It seems as if the usefulness of the 2.0L system is for day hikes (and it's presented that way in at least one Platypus product video). In contrast, the 4.0L system can be used for day hikes AND overnights AND weekend trips AND week-long trips, etc.

Reviewers Note: Upon re-reading backcountry.com's product description above, the 2.0L product would be a good choice for solo backpacking adventures. But, for all the reasons I've outlined above, I still recommend the 4.0L system.

NEW! Platypus GravityWorks Filter

Posted on

The reviews keep coming and one thing is clear: the Platypus GravityWorks water filtration systems are changing how people filter water. Whether you're backpacking, car camping or even on a day hike, an ultralight and compact GravityWorks System lets you say goodbye to pumping and everything else you ever hated about filtering water. Just fill it, hang it and get back to enjoying while gravity and our advance hollow fiber filter deliver clean water at up to 1.75 liters per minute. Welcome to the future of filtration.

4 5

great passive filter

  • Familiarity: I've put it through the wringer

The filter works ok, it filters about a liter a minute. Comparing this with a MSR sweetwater filter, the sweetwater was faster and the water came out cleaner. This is a great passive filter, you just fill it with water and walk away. Make sure it does freeze.

3 5

Milli Vanilli said blame it on the rain

But the Barenaked Ladies said "if you blame it on the rain what can be gained so, if all else fails you can blame it on?.. [Sawyer's water treatment system]".

Yes that is right, Sawyer. Had it not been for the pure awesomeness of a similar style gravity filter system by Sawyer, I would blame my Platypus water treatment system's difficulty purely on the rain. Why?

An exceptionally rainy year this past field season (I guide research expeditions in Mongolia) deposited a lot of silt into the rivers/streams in the remote valley of Mongolia where we were working. Although it was nice having a wealth of water for bathing (something we had not enjoyed in the past), the overload of fine silty sediment really clogged my Platypus system, resulting in daily cleanings by the end of the project.

(As a side note the system is easy to clean via back flushing, but does waste time and water).

I was more than willing to excuse the poor performance to the overload of silt; however, a member of the research team was the proud owner of a Sawyer water treatment system? a system that never once had any difficulty or reduction in flow capacity. Their system filtered water just as fast on day 30 as it had on day 1. Weight or filter life be damned, next time around I recommend a Sawyer.

Milli Vanilli said blame it on the rain
Responded on

HAH! Thanks for a chuckle, Will !

5 5

NO pumping. FAST.

  • Familiarity: I've used it several times


I recently purchased a 2 L Platypus, and I have used numerous times on a few backpacking trip. Took the Platy on a 2-day 25 mile backpacking trip in MI, on the Manistee River trail loop. I used it numerous times on some fast moving fresh water creeks. It worked beautifully! It was very simple and easy to use. The Platy filters water incredibly fast. Just fill the bag, hang it up, and watch it filter. NO pumping. Just make sure you back flush the line to clear the air out of the lines or it will slow the filtration rate. I have yet to use the Platy on any very cloudy or darker water, so I don’t know how it will perform on water like that. But I would try to avoid water like that to ensure a longer filter life. My only complaint thus far is the bag it came with. The carry bag is a little snug to put all the tubes and filters in. Other then that, I highly recommend this product to anyone.

NO pumping. FAST.
4 5

original system is better.

  • Gender: Male
  • Familiarity: I've used it several times

I am not sure i understand what Platypus did with this system, but i am not crazy about it. My friends have the original, which has screw cap interface for the clean bladder. This screw cap interface works with all of my Platy bladders flawlessly. But this 2.0 system has the multi-plug pieces that are great for a nalgene, and work OK for others - OK specifically for the Platy blatters. That's really irritating. I like the set and forget practicality of the old system. Going to have to rig up a screw cap from a replacement hose (for $13 bucks!) if i want the best system.
On the brightside, the nalgene screwtop can be used with a hose to fill from a nalgene (e.g., reverse the flow). I like this because i normally use a steripen rather than this filter.
Otherwise, this is an excellent, lightweight filter for multiple people. It's a lot for a solo hiker, but excellent for a group.

5 5

Perfect for filtering water for a group

  • Familiarity: I've used it several times

I bought this filtering kit for a group backpacking trip. This way we would not spend a lot of time down by the river pumping water.
This was an amazing addition to our camp site. I bought the 1 gal reservoir jug to always have water around, especially while we were cooking. This way we got to spend a lot more time hanging out with each other as a big group and no one was stuck squatting by the water trying to pump water into their nalgene.
Just open the dirty water bag, clear off a layer of bugs and floaties on the water and dunk the bag. It seems like three swipes of the bag into the water gets it full. then connect it to the filter hose and the water flows into the clean reservoir. after a few seconds I definitely recommend lifting the clean reservoir above the dirty bag to get all the air bubbles transferred to the dirty bag to make it flow faster.

Compact setup

Compact setup

Posted on

The whole kit is very compact. The size of the package is enough to make you wonder if it really does have everything it says it does. .... it does BTW. The two 2L reservoirs fold up into almost nothing making this super compact for a 2L system.

Compact setup

Compact setup

Posted on

This filter system is a very compact system. This included mesh bag contains all the fittings, hoses, clamp, and the two 2L reservoirs.