Purchased the gravity flow about two years ago... Works flawlessly. Ive filtered extremely dirty water and have never had problems with flow rate. When flow decreases a quick back flush is all it takes. When with larger parties having the ability to filter 4L and carry back 4L more in the dirty reservoir is awesome. Two thumbs up!!!
Purchased the gravity works about two years ago.... Absolutely no complaints. Maintains great flow even filtering extremely dirty water. When flow does slow a bit, a quick back flush is all it takes. I use it for backpacking/camping. With bigger parties having the ability to filter 4L and carry back another 4L of dirty water is awesome. Also can double as a quick shower by removing the fliter :-)
A maximum of 50,000 bonus promo points can be earned on the 3XREWARD promotion code. Moosejaw Points are cut in half for sale items. So, if you get something on sale you'll actually get 15% back in points instead of 30% back. Promo Points cannot be earned on Gift Cards, Patagonia, Western Mountaineering, Montbell and Marmot. This promotional code can only be used once and is good through May 4, 2014. Your reward points won't show up in your account until after your order is shipped. See site for all program details.