Comments about Platypus GravityWorks Filter:

No puming involved! Just used this filter for Five weeks in Latin America and saved alot of money on bottled water. Can't say how it would perform in a silty environment but works great when starting with clear water. Definately going to get extra filter cartridge and try it in the desert this spring.

Comments about Platypus GravityWorks Filter:

Just got done with my firs hike with this. It was so easy and fast! It beats my old pump hands down.

Comments about Platypus GravityWorks Filter:

Very easy to use.
Even cleaned up rusty pump water.
Just remember to un-do the shut-off clip ;-)

Comments about Platypus GravityWorks Filter:

If you use platypus water bags then this is the answer. Easy to use and fast. No more pumping. Easy to clean.

Comments about Platypus GravityWorks Filter:

This filter is great! I don't like using pumps so this is an easier way, just fill the dirty bag with water, and position bags for gravity to do the work! It takes only a few minutes to filter. The only thing I wish were different is the dirty bag is hard to zip closed, which is fine if you're not moving with it, but it should have the blue zip press like the Platypus bladder system has, makes it easy, and you don't hurt your thumbs trying to push it closed.

Comments about Platypus GravityWorks Filter:

This is an easy to use and fast filtration method. I coupled it with a platypus water bag so that I had two 4 liter bags of water available on a recent fly in camping trip.

Comments about Platypus GravityWorks Filter:

I used this on a recent solo backpack on the Finger Lakes Trail in New York. While perhaps overkill for 1 person, it is as light or lighter than a pump, and much faster. It is not as light as Aquamira, but it gives you water NOW. Fill it, hang it, and forget it. 4 liters of clean water in 2-3 minutes while you sit back and watch gravity in action. Face it, pumping is work: squatting creekside or hauling pans of water to a more comfortable spot to pump. The Clean reservoir doubles nicely as a 4 liter canteen, and I needed to carry that plus my normal backpack reservoir on this trip. Would be especially easy for larger groups. Back flushing, which is recommended, is easy and works. I suppose there is potential for contamination of the clean hose end, but normal "camp hygiene" applied to this should be OK. A dipping cup is helpful to fill the dirty reservoir in very shallow creeks or springs. It would be nice if the clean reservoir cap had a leash. Ditto the filter plug.

Comments about Platypus GravityWorks Filter:

This product is great for doing multiple task. First thing at camp is to fill the bag, hook it up, and while filtering I set up camp.

If the water source is a small pool it would need to be filled using a cup or pump. Which reduces some of its advantage.

If your hiking alone, not a quick way to refill on the go. Someone in the group needs a quick way to fill bottles.

Comments about Platypus GravityWorks Filter:

used on a 2 week hike in the sierras with 4 people, and it performed beautifully. you need to backwash regularly after the first few days, but once you figure it out it takes about 1 extra minute. nothing to it. it would be good to bring a spare filter since they don't weigh much, but we didn't need one.

Comments about Platypus GravityWorks Filter:

I brought this on a 3 week trip to Great Smoky and Shanandoah NP's, for 2 people. We did both backcountry and car camping. It was great for both.

It's very lightweight, compared to my old pump filter, easy to use and fast. The only work invovled in fetching the water, assembly and hanging it. I found you don't even need to hang the dirty bag much higher than the clean bag for gravity to do its work.

The big mouth at the top of the dirty bag is great for fast filling, but I did notice I would have a little trouble sealing it. Most of the time it wasn't even necessary to seal the top, since I would filter the water immediately and throw it back into my pack. But the few times I needed to carry water away from the source (due to high bug volume and the lack of desire to stand amoungst them) I found the seal a little difficult to completely seal. Once sealed however, its a great seal; no leakage.

The four liter capacity seemed to be overkill when I was considering to purchase, but in use I rather enjoyed the large capacity. You don't have to fill it, and I used the clean bag as my packback bladder. I ussually didn't fill the clean water unless I was at camp (not while hiking due to weight) but you can seal the bladder without any air and it doesnt take up your entire pack's space.

The plastic seems to be made of a durable density, its very simple to assemble and use and I would absolutely buy it again. I'm quite happy to be rid of my pump filter. Fantastic item.