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The AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.
| Weight | 14.2 ounces |
| Dimensions | (Cartridge) 1.9 x 5.7 / (reservoir) 22 x 10 inches |
| Filter medium | Hollow fibers |
| Housing material | ABS plastic |
| Removes | Protozoa and bacteria |
| Output | 1.75 liters per minute |
| Field cleanable | Back flush |
This water filter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight and pump-free system. The MSR AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, with the latest Hollow Fiber technology and the power of gravity, the AutoFlow microfilter is fast —up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions. Click here to view our Water Treatment FAQ Guide No Pumping: Lets gravity do the work so you don't have to. Fast: Filters more than 1.75 liters per minute. Lightweight: Weighs only 10.5 oz. (299 g). Field-Maintainable: Can be cleaned repeatedly without disassembly for flow recovery. Adaptable: Filter directly into most any bottle or reservoir with included Universal Bottle Adapter. Country of Origin: Made in Seattle, USA
Let gravity do all the work with the extremely efficient and pump-free MSR AutoFlow™ Gravity filter system.
It's as simple as "Fill it. Hang it. Forget about it."
The AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.
The AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.
It's as simple as "Fill it. Hang it. Forget about it." The AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.
The AutoFlow Gravity Microfilter from MSR represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.
The MSR AutoFlow Gravity Filter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system. With the latest Hollow Fiber technology and the power of gravity, the AutoFlow is fast too—up to 1.75 liters per minute without a single pump stoke. 4-liter reservoirs allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions.
Let Mother Nature do the heavy lifting for you - the AutoFlow Gravity Filter from MSR uses nothing but the power of gravity to filter a liter of water in just 1 minute. Keep your entire group hydrated without ever pushing a single pump, and know you're safe from protozoa, bacteria, and particulates in your water.
Gravity is good the MSR AutoFlow Gravity Filter uses the Earth's sucking power to filter one liter of water in just one minute. Keeps your posse hydrated with clear liquids by removing 99% of bacteria, protozoa, and particulates.
The MSR Autoflow gravity filter is one of the newest and most innovative MSR products to hit the market in a while. Utilizing gravity as your friend, this filter is fast, super durable, and filters down to the smallest micron
Pump free filtration filters more than 1.75 liters per minute
Filter uses technologically advanced hollow fiber technology
4 liter reservoirs (included) allow you to filter large quantities at once making it perfect for groups, while quick and easy tool-free cleanings maintain high flow rates on extended expeditions
Once filtered, store your water and have it ready for drinking or cooking in no time
Connects to most any bottle or reservoir with included Universal Bottle Adapter
The Cascade Designs AutoFlow Gravity Microfilter represents the latest evolution of backcountry hydration, combining water filtration, storage and collection into a single, lightweight system.
The MSR® AutoFlow Gravity Microfilter represents the latest evolution of backcountry water filtration. Just fill it and hang it, let gravity do the rest for you. It's fast, too-nearly 2 quarts per minute.
Collect, filter, and store your water in the backcountry with the quick and convenient MSR Autoflow Gravity Filter. This field-cleanable filter lets gravity do the work and cleans nearly two liters of water per minute. The four-liter reservoir holds enough wet stuff for your whole group, and the adapter end piece fits onto most standard water bottles and reservoirs.
No description provided.
| Adapter: | Nalgene |
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| Cartridge Life: | 1500L |
| Cleanable Filter: | Yes |
| Dimensions: | (Cartridge) 1.9 x 5.7 / (reservoir) 22 x 10 inches |
| Element pore size: | .2 micron |
| Field cleanable: | Back flush |
| Filter Element Duration: | 400 gallons |
| Filter Element Type: | Hollow Fiber |
| Filter Type: | Hollow fiber |
| Filter element: | hollow core |
| Filter life: | Up to 1,500 liters, depending on conditions |
| Filter medium: | Hollow fibers |
| Gravity Flow: | Yes |
| Housing material: | ABS plastic |
| Kills Viruses: | No |
| Manufacturer Warranty: | 1 Year |
| Micron Size: | 0.2 microns |
| Output: | 1.75 liters per minute |
| Output rate: | 1 liter / 1 minute |
| Pump Rate: | 2 qt. / min |
| Recommended Use: | Backpacking, expeditions, basecamp |
| Removes: | Protozoa and bacteria |
| Warranty: | Limited Lifetime |
| Weight: | 10.5 ounces (empty) |
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View other products from MSR classified in Hiking & Camping > Water Treatment. View all products from MSR.
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Sometimes, we can't be sure that the product is the same across the stores that offer its, so you may find the same product listed more then once on GearBuyer.com, we these list highly similar products below.
 | MSR AutoFlow Replacement Cartridge | $27.95 - $44.95 |
 | MSR AutoFlow Microfilter Replacement Hose Kit | $12.95 |
These are products that have been indicated being comparable to this product:
 | MSR 6L Dromedary Bag Hiking & Camping > Water Bottles & Flasks | $32.95 - $39.95 |
 | Platypus CleanStream Gravity Water Filter Hiking & Camping > Water Treatment | $79.95 - $89.95 |
 | Sawyer Complete Water Treatment System - 4 Liter Hiking & Camping > Water Treatment | $124.95 |
 | MSR DromLite - 2 Liter Hiking & Camping > Water Bottles & Flasks | $25.00 |
 | Platypus Hoser 2.0L Reservoir - 70 oz. Hiking & Camping > Backpack Accessories | $19.95 |
 | MSR Hyperflow Microfilter Hiking & Camping > Water Treatment | $99.00 - $99.95 |
 | Rei Nalgene Everyday Wide-Mouth Loop-Top Water Bottle - 32 fl. oz. Hiking & Camping > Water Bottles & Flasks | $9.95 |
 | CamelBak Omega 70 Reservoir Hiking & Camping > Hydration | $27.95 - $28.00 |
 | Adventure Medical Oral Rehydration Salts Hiking & Camping > First Aid & Emergency | $6.99 - $7.99 |
 | Sigg Water Bottle with Screw Top - 32 fl. oz. Hiking & Camping > Water Bottles & Flasks | $24.95 |
This product is available in the following colors:
Click any color to show the product in that color
 | Red |
Use this chart to find which retailer offers this product in the size, color or other options that you desire. Click on the price to purchase.
| Size | Color | |
|---|---|---|
| Red | N/A | |
| Red | 89.90 | |
| N/A | 79.95 | |
Oregon Mountain Community offers this product at $78.95, but does not provide any color/size information.
TahoeMountainSports.com offers this product at $79.95, but does not provide any color/size information.
Ramsey Outdoor offers this product at $79.95, but does not provide any color/size information.
Altrec offers this product at $79.95, but does not provide any color/size information.
Mountain Gear offers this product at $89.00, but does not provide any color/size information.
Mountains Plus Outdoor Gear offers this product at $89.93, but does not provide any color/size information.
Backcountry.com offers this product at $89.95, but does not provide any color/size information.
Eastern Mountain Sports (EMS) offers this product at $89.95, but does not provide any color/size information.
ProLite Gear offers this product at $89.95, but does not provide any color/size information.
REI offers this product at $89.95, but does not provide any color/size information.
Moosejaw offers this product at $89.95, but does not provide any color/size information.
USOutdoor.com offers this product at $89.95, but does not provide any color/size information.
SummitHut.com offers this product at $89.95, but does not provide any color/size information.
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No Pumping, Quick and Easy | |
| Rating: |  |
I recently used this filter on a backpacking trip with a 6L MSR Dromedary Bag. | |
| gray.russe2111483 at Backcountry.com on 05/19/2009 | |
MSR Autoflow Gravity Filter | |
| Rating: | |
I've backpacked in the California mountains for the past 9 years, and this is the best filter ever. I have carried pumps with paper cartdidges (never again) and I have carried MSR water pumps that have made excellant water and were easy to clean, but this new Autoflow was fantastic. We had a group of 7 and we were able to fill all our water bottles and get tents setup and meals prepared. There was a one-time learning curve about not putting the cap on the nalgene too tight (the air has to escape for the water to go in) and the same thing when backflushing the filter. Everyone wanted a turn using it and it is now back in the wilderness with a local Scout Troop, so I'll see how hardy it really is. | |
| bob3167367 at Backcountry.com on 07/28/2009 | |
No More Pumping! | |
| Rating: | |
This is an awsome water filter! You fill the bladder, hang it up, and let gravity do the rest. I have found that the flow is no quite as high as advertised, but it will filter 4 liters in under 4 minutes. I have had no trouble backflushing the filter element. I also like the fact you can fill the bladder and yo don't have to fliter the water right then... you can have water on demand! Everyone who has seen mine in action has wanted one for themselves. The bladder can hold up to 6 liters of water, but only has markings for 4 liters. It can take some creative thinking to fill the bladder under some circumstances, but I have always been able to fill it. I would recomend this filter to anyone. | |
| Sean Chism at Backcountry.com on 09/25/2009 | |
Great improvement here! | |
| Rating: | |
| Four of us just got back from 10 days in the southern High Sierra and we all agreed that this system is great! We had a Miniworks for backup just in case and we did not use it at all. This system is very simple to use. We found that we could always find a branch or rock to hang the reservoir on but sometimes you have to get the air bubbles out of the hoses...also we found that it worked better if you left the adapter loose on the Nalgene bottle so air could escape...other than that it worked perfectly, no downside that we could see. | |
| flyhike at REI on 08/20/2009 | |
Wow..Great filter! | |
| Rating: | |
| Got this for a small cabin with a shallow well, just for safety. It filters at least as fast as the specs say if not faster. Even the filtered water tastes a little better, tho it doesn't have a flavor filter. It's exactly what's needed for large amounts of clean water. One tip...when backflushing, use an old nalgene bottle & drill a small hole in the base of the bottle (it's hung upside down like an IV) so the water can flow out without creating a vacuum, otherwise it'll take half a day just to backflush. With the hole, it's 15 min at the most. | |
| Old4x4 at Eastern Mountain Sports (EMS) on 07/27/2009 | |
Fantastic | |
| Rating: | |
Buddy brought this on a climbing trip this spring, best water filter I've ever used. | |
| tlloyddavies at Backcountry.com on 06/09/2009 | |
Clean water , little effort | |
| Rating: |  |
| Drinkable water in camp is no longer a half-hour chore by the stream. Great product. One down side: MSR recommends the user backflow the filter after filtering each 8 liters of water. Problem is that when using a Nalgene bottle or a camelbak, a sucton is formed and no liquid will reverse flow through the filter. I sent the system back to Cascade Designs and they drilled a hole in the "Universal Cap." This should fix issue for me, but I don't think a design change is soon planned. | |
| TrailGuy at REI on 10/01/2009 | |
"Great filter, as long as it doesn't freeze." | |
| Rating: | |
| Title says it all. Works well, great flow and comes with a bottle adapter that will allow you to filter water directly into most available containers. (I have used a Camelbak, a MSR Dromedary bag and a Nalgene; flawless on all three.) One big downside is that the filter element will be destroyed if you allow it to freeze. I live in the arctic and this is problematic. My solution: Take the filter module off and keep it in your jacket inner pocket. Overall great filter. | |
| Merlin at Moosejaw on 06/14/2009 | |
Multi-Tasking Camsite | |
| Rating: | |
| Used on float trip in Alaska. Started water as soon as we decided on campsite. Had water when we were ready never had to wait(after: wood, tent, rafts, gear, game taken care of). While we never had to wait - not for those who need immediate access to water. Overall should be in every kit bag because it works while you are busy with other chores. | |
| Anonymous at Altrec on 05/23/2009 | |
Excellent | |
| Rating: | |
I just came back from 7 days in the Pasayten Wilderness in north cascades, this filter was my favorite piece of gear. It worked flawlessly - and made something that is usually something of a cold chore into something that took no time and no effort - it just worked in the background and there was water when I needed it. | |
| nmcfarl at Backcountry.com on 08/10/2009 | |
leaks | |
| Rating: |  |
| The product has a great deal of potential. Filters quickly, packs down, is not that heavy, and is fairly easy to clean. I have always carried the msr miox, which I love, but you don't have instant water. A friend bought the autoflow gravity filter. I tested it for him on a short overnight trip in the ADK's. One flaw was that the seal around the water gauge came apart. Not just a small leak. After a lot of duct tape over the entire water gauge it worked nice but still leaked. Don't buy, wait for the design to get better. | |
| T at Eastern Mountain Sports (EMS) on 09/01/2009 | |
