Brand | Platypus |
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Special Feature | Lightweight |
Product Dimensions | 13.2"L x 2.8"W x 5.8"H |
Package Information | Cartridge |
Installation Type | Portable |
Power Source | Gravity Powered |
Item Weight | 0.33 Kilograms |
Model Name | GravityWorks |
Maximum Flow Rate | 1.75 Liters Per Minute |
Item Package Dimensions L x W x H | 14.25 x 8.39 x 3.15 inches |
Package Weight | 0.46 Kilograms |
Item Dimensions LxWxH | 13.2 x 2.8 x 5.8 inches |
Brand Name | Platypus |
Color | Blue, Black, Grey |
Suggested Users | unisex-adult |
Number of Items | 1 |
Manufacturer | Cascade Designs Inc. |
Part Number | 3135 |
Model Year | 2014 |
Style | 4.0 Liter |
Size | 4-Liter |
Sport Type | Camping & Hiking |
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Ships from: Amazon.com Sold by: Amazon.com
To see product details, add this item to your cart.
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Ships from: Amazon Sold by: Amazon Warehouse
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97% positive over last 12 months
86% positive over last 12 months
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Platypus GravityWorks Group Camping Water Filter System, 4-Liter
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
Brand | Platypus |
Special Feature | Lightweight |
Product Dimensions | 13.2"L x 2.8"W x 5.8"H |
Package Information | Cartridge |
Installation Type | Portable |
Power Source | Gravity Powered |
Item Weight | 0.33 Kilograms |
Model Name | GravityWorks |
Maximum Flow Rate | 1.75 Liters Per Minute |
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About this item
- High-capacity, gravity-fed, hollow-fiber water filter system is ideal for group and family camping, outdoor adventures, and emergency preparedness
- Meets all EPA/NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa, including giardia, cryptosporidium, E. coli, salmonella, cholera
- No pumping required; reservoir fills easily and hangs from a tree to deliver four liters of filtered water for cooking and washing in 2.5 minutes
- Includes 4-liter dirty water reservoir, 4-liter clean water reservoir, hollow-fiber microfilter, hoses, shutoff clamp, and storage sack
- Replaceable cartridge filters up to 1,500 gallons; produces flow rate of 1.75 liters/minute; kit weights 11.5 ounces; made in the USA
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From the brand
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Our mission is to offer the finest taste-free and adventure-ready hydration and water filtration products on the planet. For over 20 years, we’ve made water bottles and hydration solutions for everyday hydration needs from the city to the trail. We are water geeks, lab techs, researchers, designers, managers, directors, worker bees, and we like to get outdoors and ride, hike, run, paddle, climb, rip, and enjoy every sip of adventure we can get.
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We Believe in Making Things Right
We’re proud of the fact that we make the majority of our hydration solutions here in the U.S.A. in our own factory. And because we believe in what we make, and making it right, we have our own certified, world-class water laboratory, which enables us to research, develop, and test technologies so that you can have safe, effective, and dependable hydration and filtration options that meet your needs.
We love what we do and where we do it, and we like to think that shows in what we make.
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From the manufacturer
GravityWorks 4L System | GravityWorks 2L Bottle Kit | QuickDraw MicroFilter System | AutoFlow XL 10L System | |
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Customer Reviews |
4.8 out of 5 stars
1,561
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4.4 out of 5 stars
170
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4.4 out of 5 stars
426
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4.7 out of 5 stars
55
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Which model is right for you? | High-capacity system for filtering and dispensing water for groups | Light, compact system that filters directly into any bottle or hydration reservoir. | Ultralite and portable 1L system great for thru-hikers and fast-and-light missions | Large yet light 10L system for group basecamps that filters directly into any water bottle |
Flow Rate | 1.75 liters per minute | 1.75 liters per minute | 3 liters per minute | 1.75 liters per minute |
Cartridge Type / Lifespan | Hollow Fiber / 1500 Liters | Hollow Fiber / 1500 Liters | Hollow Fiber / 1000 Liters | Hollow Fiber / 1500 Liters |
Field Cleanable? | Yes | Yes | Yes | Yes |
Weight | 11.5 oz / 326 g | 9.5 oz / 270 g | 3.5 oz / 100 g | 12 oz / 340 g |
Product Description
The Platypus GravityWorks 4.0 Liter High-Capacity Water Filtration System is ideal for basecamps, group and family camping, outdoor activities, and emergency preparedness. It does not require pumps, batteries, moving parts, or chemicals, ensuring access to clean water from contaminated sources, in situations ranging from adventure to survival. The replaceable hollow-fiber microfilter cartridge filters up to 1,500 gallons of water, and meets all EPA and NSF guidelines for removal of 99.9999% of bacteria and 99.9% of protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella, and Cholera. The water filtration system is easy to use almost anywhere. Simply scoop water from a lake, river, stream, or other contaminated water source into the 4.0-liter dirty water reservoir, and suspend above the 4.0-liter clean water reservoir. Water flows through the walls of the bundled fibers at rate of 1.75 liters/minute, leaving impurities behind, and filling the 4.0-liter clean water reservoir in just 2.5 minutes. It’s also easy to maintain in the field, backflushing in just four seconds to clean and restore performance. The Platypus GravityWorks 4.0 Liter High-Capacity Water Filtration System includes a 4-liter dirty water reservoir, 4-liter clean water reservoir, hollow-fiber microfilter, hoses, shutoff clamp, and storage sack. The complete kit is compact, packing down to the size of a one-liter water bottle, and weighs just 11.5 ounces. Made in the USA.
Product information
Technical Details
Additional Information
ASIN | B00G4V4IVQ |
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Customer Reviews |
4.8 out of 5 stars |
Best Sellers Rank | #16,893 in Sports & Outdoors (See Top 100 in Sports & Outdoors) #43 in Camping & Hiking Water Filters |
Date First Available | August 20, 2009 |
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the water filter easy to use and set up. They say it filters water much faster with no manual effort. They also appreciate the performance, saying it works flawlessly and quickly. Customers like that the filter is light weight. They mention that the materials are well made and durable.
AI-generated from the text of customer reviews
Customers like the quality of the water filter. They mention that it filters water much faster than their older style filter, is well built, and easy to use. The filter timing is fast and the flow rate is impressively fast. Customers also say that the filtration system is amazing, efficient, and simple. They say it can filter just over a gallon in less than 10 minutes, making it the easiest way to purify water without the taste from tablets.
"This filtration system is amazing...." Read more
"...Cons:The filter is advanced but delicate, it cannot be dropped or used if the temperature may drop below 32F (0C) as it will damage the filter...." Read more
"Used product for a week long river trip. Easy to use filters water fast. Filtered water still tastes like river water...." Read more
"A very simple and efficient way to create a basecamp spigot and hydration bag refilling station (see image for details)...." Read more
Customers find the Platypus system easy to use, simple, and efficient. They say it's convenient, takes hardly any time, and is easy to roll up. Customers also mention that the difference in effort is absolutely amazing.
"...Enough capacity for two people, light, effective, easy to set up. Durable and comes with all the bits and pieces...." Read more
"This filtration system is amazing. It's really simple to use, it filters 4 liters of water in just a few minutes..." Read more
"...It is SOOOOO easy to use. Dunk it in the stream and within a few minutes you have 4 liters of clean water...." Read more
"...All in all a great product. Simple to use. Would like it if the bag was just a bit larger...." Read more
Customers are satisfied with the performance of the filter system. They mention that it works well, effortlessly, and efficiently. Some say that it has not given them a single issue. Customers also mention that the system works great for lakes, flowing rivers, and creeks, and that it's lightweight.
"...Enough capacity for two people, light, effective, easy to set up. Durable and comes with all the bits and pieces...." Read more
"This filter system works pretty darn good. I took it on a 3 night backpack trip on the Escalante River in Southern Utah with 6 people...." Read more
"I’ve used this system for years on canoe trips to BWCA. It works flawlessly and quickly. It packs down and weight is minimal...." Read more
"...it would be a nightmare pumping so much water... It worked perfectly for 5 days with daily flush...." Read more
Customers like the weight of the water filter. They say it's light weight, easy to set up and use, and is lighter than most pump setups. The compact size makes it easy to carry and is worth the extra weight and size. The filter can filter water for two people and is comparable in size to a pump filter.
"...Enough capacity for two people, light, effective, easy to set up. Durable and comes with all the bits and pieces...." Read more
"...It's pretty easy to carry...." Read more
"...This weighs less than a pound at 13.6oz! This can also save you money in the long run...." Read more
"...It works flawlessly and quickly. It packs down and weight is minimal. I bring a backup uv purifier but have never needed it." Read more
Customers like the quality of the water filtration system. They say it is easy to use, durable, and dependable. Customers also appreciate the well-made materials and the durable pumps. They mention that the system is well designed and a great solution for backpackers.
"...Durable and comes with all the bits and pieces. I added a charcoal for good measure.You won’t regret his purchase." Read more
"...a lot of water in one shot, it filters FAST, and most importantly... NO PUMPING! If you're backpacking this is a no brainer...." Read more
"...It seems well-made however. My 8 year old filled the bag and made the attachments for us...." Read more
"...The pumps are really really good (I have an older Katadyn pump), but they take some effort to use - and you'll get tired pumping water for a group..." Read more
Customers find the cleaning process of the water filter to be easy and fast. They mention that the filter is easy to clean out if there is a clog, and the bags are fool proof to keep you from contaminating clean from dirty. Overall, most are satisfied with the ease of cleaning this product.
"...It can easily double the amount of clean water you have access to at your site...." Read more
"...It was easy to unclog though so not a big deal. I gave it 4 stars rather than 5 b/c I wouldn't trust it in less than pristine water...." Read more
"...Within a very short time you have clean, filtered water...." Read more
"...The river is pretty clean already, but it filtered stuff out for sure. It’s amazing how fast it goes too...." Read more
Customers like the value of the water purifier. They say it's an excellent piece of equipment that works as advertised. They also say it makes a lot of good, clean water very quickly and easily. However, some customers feel the price is a little high, but well worth it. Overall, customers are satisfied with the value and quality of the product.
"...Yeah it's a little pricey, but well worth it. I would give it six stars if I could. Platypus has hit it out of the ball park with this." Read more
"...I couldn't believe it. And the real test comes with how pure and clean the filtered water was...." Read more
"...Just saving the extra trips to the stream or water is worth the money. It does take a little room in your pack, but everyone camping loved it" Read more
"...The added weight isnt significant and is totally worth it to save time and effort...." Read more
Customers like the water capacity of the outdoor recreation product. They say it filters a lot of water in a short amount of time, providing plenty of water for cooking and drinking. They also say the 4 liter system is amazing and fast. Customers also mention that it's easy to fill water from a lake or stream.
"...It's really simple to use, it filters 4 liters of water in just a few minutes (you can see the water level drop while you watch it), and by..." Read more
"...What sold me on this is the fact that you can get a lot of water in one shot, it filters FAST, and most importantly... NO PUMPING!..." Read more
"...Overall a great product and easy to use. Filters quite enough water at a time too." Read more
"...Oh, and it's lighter than must pump setups with the added bonus of having two reservoirs...." Read more
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Top reviews
Top reviews from the United States
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You won’t regret his purchase.
I spent quite a few hours researching water filtration systems online. This is the one I settled on, based in part on the review on Outdoor Gear Lab, and I'm really satisfied with my decision. I was originally going to buy a pump-style filter and I'm so glad I didn't! With a pump filter, you are really limited by location (you need to stay by the water source while you pump), time and effort (it takes a few minutes just to get a liter of water, and it's work!), and your water storage containers (if all you have is a two-liter water bottle, that's all the clean water you get).
With this system, you just scoop up the water, seal the bag and carry it back to your site. It's pretty easy to carry. Then you do nothing as the water filters, and when it's done you have four liters of clean water in separate storage from your other water bottles. It can easily double the amount of clean water you have access to at your site.
Two possible downsides (which I didn't factor in the 5 stars I gave since overall this product is awesome):
1. It's definitely not cheap
2. I don't know how long the bags will last. That said, I had a platypus hydration system back in 1999 and that thing lasted for years. I recently found that old water bag and it still works just fine.
In conclusion, if you have thought about your filtration needs and this system seems like a good fit, you should spend the money and buy one. It's worth it.
The other "straw" filters are handy, but if you need to fill a Camelbak bladder or use water for cooking, then you'll need a filter that is capable of filtering more water. The tubing and the storage bags are high quality and will not kink or deform. The hoses are long so you can hang the dirty bag from a branch and put the clean bag on the ground for maximum filtering speed, or you can just hang the clean bag from a lower branch. To dispense you can just detach the hose on the clean side of the filter and hang the clean bag as show in the picture.
Want to get the most out of one trip to the water source? You can actually get 8 liters in one shot! Just fill the dirty bag and wait a short 3 minutes for it to filter. Then detach the clean water bag from the hose and screw on the provided screw cap to close the clean bag. Then will up the dirty bag and boom you've got 4 liters ready to go and another 4 that can be quickly filtered! That's 2.1 Gallons in one trip!
Cleaning:
Every 8 liters or so (depending on water quality) when the dirty bag is nearly finished filtering, simply lift the clean bag higher and back-flush it for about 5 seconds and then clamp the hose and discard the water in the dirty bag. For long term cleaning add 2 liters of clean water to the dirty bag, add a couple drops of bleach, and filter it through. You can towel dry the dirty bag, but the clean bag you'll need to just hang it for a few days in a dry place. The filter can be dried out by removing the bumpers and the plastic end pieces, and leaving it sit for a week.
Cons:
The filter is advanced but delicate, it cannot be dropped or used if the temperature may drop below 32F (0C) as it will damage the filter. You can easily test the integrity of the filter though by trying to blow air backwards through it. If there are bubbles on the other side, then the filter is broken, if not then you are good.
I simply love this filter and couldn't be happier with my purchase. I hope you found this review helpful!
Reviewed in the United States on September 21, 2015
The other "straw" filters are handy, but if you need to fill a Camelbak bladder or use water for cooking, then you'll need a filter that is capable of filtering more water. The tubing and the storage bags are high quality and will not kink or deform. The hoses are long so you can hang the dirty bag from a branch and put the clean bag on the ground for maximum filtering speed, or you can just hang the clean bag from a lower branch. To dispense you can just detach the hose on the clean side of the filter and hang the clean bag as show in the picture.
Want to get the most out of one trip to the water source? You can actually get 8 liters in one shot! Just fill the dirty bag and wait a short 3 minutes for it to filter. Then detach the clean water bag from the hose and screw on the provided screw cap to close the clean bag. Then will up the dirty bag and boom you've got 4 liters ready to go and another 4 that can be quickly filtered! That's 2.1 Gallons in one trip!
Cleaning:
Every 8 liters or so (depending on water quality) when the dirty bag is nearly finished filtering, simply lift the clean bag higher and back-flush it for about 5 seconds and then clamp the hose and discard the water in the dirty bag. For long term cleaning add 2 liters of clean water to the dirty bag, add a couple drops of bleach, and filter it through. You can towel dry the dirty bag, but the clean bag you'll need to just hang it for a few days in a dry place. The filter can be dried out by removing the bumpers and the plastic end pieces, and leaving it sit for a week.
Cons:
The filter is advanced but delicate, it cannot be dropped or used if the temperature may drop below 32F (0C) as it will damage the filter. You can easily test the integrity of the filter though by trying to blow air backwards through it. If there are bubbles on the other side, then the filter is broken, if not then you are good.
I simply love this filter and couldn't be happier with my purchase. I hope you found this review helpful!
Top reviews from other countries
A must for all camping trips!
It breaks down to how easy it is to use. I don’t want to waste time pumping water when I can be setting up my camp. I also do not want the extra space and weight of a pump system in my pack. This product takes care of all of that! Fill the dirty bag with water, hook up the filter and clean bag below it and let gravity do the work. In around 5 minutes you will have 4 liters of fresh clean water ready to go with zero effort. How can you go wrong here!? It’s absolutely the best system around right now.
Perhaps the water you are filtering is very silty or dirty. No problem! If the filter gets plugged up just raise the clean bag over the dirty and back flush the filter in no time. Works like a charm!
I have nothing but praise for this system! The price May be a little more than some would like but that is because it is 100% worth it! And compared to other filtration systems the price is actually very much on par. So much better than using purifying tablets that do not want to dissolve in cold water and leave the water tasting weird!