Keep your water free of microscopic hitchhikers that make you sick.
- Item #CAS0697
- Q & A
Easiest Filter System I have ever used
I bought this filter just to have an extra filter for my Platypus 4 Liter Gravity System. I used the system for two hiking seasons and have never had an issue. Back flushing has always cleared out slow filtering and I have never gotten sick. Even though this filter has fragility issues it isn't as easily broken as some make it seem. I would buy another if I needed too.
takes a bit of thought
I bought the filter and found that air in the feed line can block the water-flow until the air is pushed past. So I let the dirty water flow from the tube before I connect it to the filter.
A few things to remember:
1- it is fragile so do not drop it or the tubes may break.
2- it is fragile so do not freeze it or the tubes may break.
3- any air in the feed line will jam the filter until the air passes.
4- the thing has a tiny filter! So be a fanatic about prefiltering your water to prevent clogging.
5- when done, reverse the bags to back-flush the filter a bit.
6- occasionally, backflush the filter with a liter of clean water to unclog the filter parts.
7- the higher the dirty water, the better it works.
8- a sharpie is your friend. Write "Dirty" and "clean" on the proper hoses and bags so you don't get them mixed up and highlite the flow arrow with your sharpie.
I like to use the thing when I am at a base-camp. I set it up, go do something and refill the dirty water bag every 10 minutes or so.
Love the Gravity Works Filters!
- Familiarity: I've put it through the wringer
This is by far the best way to filter water for large groups or even just for yourself. It is just so easy! forget all the pumping just scoop up the dirty lake or river water in to a platypus bag that you labeled dirty water and hook the filter up and another bag. Hang the dirty water bag higher than the clean water bag and forget about it, Go catch a fish or set up camp. Come back to it and you'll have clean water. This is the fastest gravity feed system i have seen and can easily go faster than pumping it. I do not go backpacking with out this filter! lasts a very long time and when the flow starts to slow just back flush the filter and then you have many more uses out of it. Defiantly pick this up if you do any sort of backpacking or camping where you need to filter lots of water or just a water bottle
GravityWorks Cartridge Flows Like This
If you're looking at this cartridge you probably already know about its features and benefits. If not, see my review of the excellent Platypus GravityWorks 4.0L Filter System. I think the GravityWorks systems flow like a stream!
Video (test/first video upload) shows Arkansas' Buffalo River Trail after a spring rain.
Foam drop pads
Its interesting to note the gray ends are foam. This is to absorb shock should the filter get jostled or dropped. Apparently, the filter material itself is brittle.
Bigger than expected.
These filters are very light, but might be a little larger than you expect. They just always seem small in the images.