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Platypus Gravityworks Filter Cartridge

24 customer reviews

List Price: $54.96
Price: $45.97 & FREE Shipping. Details
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One Size
  • Replacement filter cartridge filters to 0.2 micron.
  • Meets EPA Guide Standard for removal of bacteria and protoza.
19 new from $38.49
$45.97 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Technical Details


Product Description

The SPECS Dimension: 1.8 x 5.8" / 4.5 x 14.7 cm Weight: 1.83 oz / 52 g This product can only be shipped within the United States. Please don't hate us.

Product Details

  • Product Dimensions: 6 x 4 x 3 inches ; 3.2 ounces
  • Shipping Weight: 3.2 ounces (View shipping rates and policies)
  • ASIN: B004LAXSKE
  • Item model number: Platypus
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (24 customer reviews)
  • Amazon Best Sellers Rank: #17,322 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

11 of 12 people found the following review helpful By Natalie on July 31, 2013
Verified Purchase
If you already have a hydration pouch, you don't need the over $100 system. I purchased just the filter and it hooks up to my hydration hose perfectly. I took and old bag and hose with a non-replaceable leaking mouthpiece and cut off the mouthpiece and cut the hose in half. I then inserted this in between the two pieces of hose. It fit perfectly without any leaks. The only thing I'm missing vs the $110 "system" is a nice on/off clamp for the outlet and a handle to easily hang up the dirty bag. I just use a piece of 2.4 mm rope.

Once you have a dirty bag with the filter on the outlet you are ready to rock and roll. You can hook up another hydration bag to fill up, or direct the output into any other container. It just pours filtered water out the hose. Some things to keep in mind is that you may need to burp air out of the filter or it will run very slowly. You also need to maintain the filter by back-flushing for 4 seconds approximately every 8L. I just back-flush it every time I use it so I don't have to keep track. Enjoy saving $70 by being able to plug in a hose for yourself : )

Edit: On my last trip the silty water source clogged this thing up with a quickness! You definitely need some sort of pre-filter for large particles. When I got home it took me about 30 minutes of backflushing and shaking to get out all the gunk, but it seems to be working well again. With a little research I found out the system does not have a built in pre-filter so you would need one there too. I'm going to tape a piece of nylon onto the bottom of my rigged dirty bag and will report back how that works.
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7 of 7 people found the following review helpful By Ro on May 9, 2012
Size: One SizeColor: none Verified Purchase
I have the whole set up but after several hundred gallons of dirty water and daily use the filter slows down. Which in away lets you know its working. It turns brown water to clear and drinkable. I had one filter slow to a crawl so I got two more for filtering water here in Tanzania.
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5 of 5 people found the following review helpful By Michael J Russell on December 4, 2012
Size: One SizeColor: none Verified Purchase
Used this on a recent AT section hike with my own gravity system made from some old tubing and a homemade water bag. Probably the best water filer I have ever used. No clogging, its light (water drains completly out), and its small.
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3 of 3 people found the following review helpful By Teri Dodson on July 18, 2013
Size: One SizeColor: none Verified Purchase
We took this on a 71-mile primitive backpacking trip to NM.

Clear running water from the streams was very easy to filter (and pretty darn quick!).
Water from slower moving streams and ponds, i.e. more sediment, took a little longer to filter, but would speed up with a 5-second backwash.

Changed the color of the water from yellowish to clear in no time!
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4 of 5 people found the following review helpful By Zee on July 1, 2013
Size: One SizeColor: none Verified Purchase
This filter is so easy... and so fast! Pumping water through a filter pump was always a pain. I changed to inline gravity filters a few years ago, and they were easy but very slow (as in drip-drip-drip). This filter solved that problem. It flows very fast, filters well, is very easy to backflush/clean, and can fill my hydration bladder without even taking it out of my pack! I have always like MSR/Platypus products, but this one is the best they have come up with. It makes water filtration so easy, that I was not afraid to use lots of water for cleanup and cooking, as it was easy to filter more.
I do recommend you buy the 'Dirty' reservoir and hose kit (or the complete setup) your first time, so you get the full benefit of this filter. If you already have a drip-bag system, this filter could easily replace your current filter in that system.
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1 of 1 people found the following review helpful By Affixer on October 6, 2014
Size: One SizeColor: none Verified Purchase
I bought this to make my own filter system. I already own two Platypus bladders and made one a dirty bag and one a clean bag. The tubing that comes with the bladder is the right size for the nipples on this filter, they fit very snug and will not come loose. I also bought this Platypus Quick-Disconnect Kit set of quick connectors for the Platypus bladders that I own, this is really what makes the system so awesome. I can click in the filter to my clean bag and when full I can just click my drinking hose in it's place. When I go backpacking, this quick system is very well liked. It is much faster than pumping (especially when doing large amounts of h2o) so I end up filtering for the whole camp. Cleaning is very easy, just squeeze the clean bag a little and watch the brown water wash back out. I didn't realize I had to clean it often, on my first trip with this I was really upset that it was so slow after a few days in the woods. When I got home, I washed it back and forth with clean water and then it magically flows at high speed again. I recommend prefiltering large bits out of the water with a t-shirt or scarf so no large bits clog the filter.
Definitely will buy another when/if it goes bad, maybe sooner for a back up. I love this system and would highly recommend the actual filter system from Platypus if you don't want to 'make' your own.

I forgot to mention, the taste is fantastic! I was really worried about it and carried many drink mixes to hide the fish poop taste I was sure to find after filtering with this.... NOT SO!
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Platypus GravityWorks Filter Cartridge
This item: Platypus GravityWorks Filter Cartridge
Price: $45.97
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